Dan White — Twinkie Defense

```mediawiki Dan White, a former city supervisor of San Francisco, became a central figure in one of the city's most infamous legal cases following the November 27, 1978 murders of Mayor George Moscone and Supervisor Harvey Milk. The trial, which drew national attention, was marked by the controversial "Twinkie Defense," a term coined by the media to describe the defense strategy that argued White's mental state was impaired due to depression, a diet of junk food, and disrupted sleep patterns. White was ultimately convicted of voluntary manslaughter — not murder — a verdict that shocked much of the public and triggered the largest civil disturbance in San Francisco's modern history. The case reshaped California criminal law directly: in 1982, voters passed Proposition 8, which abolished the diminished capacity defense that White's attorneys had successfully employed. The trial's outcome and the public fury that followed it remain subjects of ongoing legal and historical analysis.

The Twinkie Defense, formally an application of California's then-existing "diminished capacity" doctrine, was built not on a claim that junk food caused violence but on psychiatric testimony that White suffered from severe depression, with his consumption of sugary foods cited as a symptom of that depression rather than its cause. Defense psychiatrist Dr. Martin Blinder testified that White's dietary shift — from health foods to Twinkies and other junk food — was a behavioral marker of his deteriorating mental state. Under California law at the time, a finding of diminished capacity meant a defendant lacked the mental state required for first-degree or second-degree murder, allowing the jury to convict on lesser charges. The jury accepted that argument. White was convicted of two counts of voluntary manslaughter and sentenced to seven years and eight months in state prison at San Quentin — not committed to a psychiatric facility, as some press accounts erroneously suggested. He was released in January 1984 after serving approximately five years. On October 21, 1985, less than two years after his release, White died by suicide at his home in San Francisco.

History

The events leading to the 1978 murders were rooted in the political tensions of San Francisco during the late 1970s. Moscone, a progressive mayor elected in 1975, and Milk, the city's first openly gay elected official, were vocal advocates for LGBTQ+ rights and social reform. Dan White, a conservative former police officer and firefighter who won election to the Board of Supervisors in 1977, grew increasingly frustrated with the direction of city government. His core grievance was personal and political: he had resigned his supervisor's seat in early November 1978, citing financial pressures, then quickly sought to rescind his resignation. Mayor Moscone, under pressure from Milk and other progressive allies, decided not to reappoint White and planned to name a more liberal replacement. White learned of Moscone's decision on the morning of November 27, 1978.

That mid-morning — around 10:45 a.m. — White entered City Hall through a basement window to avoid the metal detectors at the main entrance. He was carrying a .38-caliber revolver and extra ammunition. He went first to Moscone's private office, where he shot the mayor four times, including twice at close range to the head. White then walked to the supervisors' offices on the opposite side of City Hall and shot Harvey Milk five times, killing him in the hallway outside his office. Both men died within minutes. White then fled City Hall and turned himself in to a former police colleague roughly an hour later.

The trial took place in May 1979. White was charged with two counts of first-degree murder with special circumstances, which could have brought the death penalty. His defense team, led by attorney Douglas Schmidt, did not dispute that White pulled the trigger. Instead, Schmidt argued that White's capacity to premeditate — a legal requirement for first-degree murder — was diminished by severe depression. The prosecution, led by Assistant District Attorney Thomas Norman, contended that the manner of the killings, including White's decision to bring extra ammunition and avoid the metal detectors, demonstrated clear premeditation. The jury of seven men and five women deliberated for 36 hours before returning verdicts of voluntary manslaughter on both counts on May 21, 1979.

The verdict set off what became known as the White Night Riots. That evening, thousands of people gathered in the Castro District and marched to City Hall. What began as a protest turned into a full-scale riot: demonstrators smashed the ground-floor windows of City Hall, set fire to a dozen police cars parked outside, and clashed violently with officers. At least 61 people were injured, including 59 police officers. Later that night, San Francisco Police officers retaliated by raiding the Elephant Walk bar in the Castro, beating patrons inside. The riots caused an estimated $1 million in property damage and stood as the most serious civil unrest San Francisco had seen since the anti-Vietnam War protests of the late 1960s. The city's police chief, Charles Gain, publicly acknowledged that some officers' conduct during the retaliation was unacceptable.

The legal aftermath was swift and lasting. California's Legislature and then its voters moved to close the loophole that had allowed the diminished capacity defense. Proposition 8, passed in June 1982, amended the state's Penal Code to eliminate diminished capacity as a defense, requiring instead that defendants meet the far higher standard of a full legal insanity plea — that they did not know the nature of their act or did not know it was wrong. The change made it substantially harder for defendants to use mental health evidence to reduce charges rather than seek outright acquittal. It stands as the most concrete legal legacy of the White trial.

Culture

The trial and its verdict had a lasting effect on San Francisco's cultural and political identity. Harvey Milk's assassination, in particular, became a defining moment for the LGBTQ+ rights movement nationally, not just locally. In the years immediately following 1978, the Castro District transformed from a neighborhood with a strong gay community into something closer to a symbolic capital for LGBTQ+ activism across the United States. Candlelight vigils held on the night of the assassinations drew an estimated 30,000 to 40,000 people to City Hall — one of the largest spontaneous gatherings in the city's history.

The Twinkie Defense itself entered the American cultural vocabulary as shorthand for any seemingly implausible or cynical legal strategy. The phrase has been invoked in subsequent decades whenever a defendant's attorney introduces an unusual psychological or environmental factor to reduce culpability. Legal scholars have noted, sometimes with irritation, that the popular understanding of the defense is almost entirely wrong: the argument was never that Twinkies made White violent, but that his consumption of junk food was evidence of clinical depression. That distinction has rarely made it into popular coverage, and the media's shorthand version has proven more durable than the legal reality.

The case also prompted serious public debate about the role of mental health evidence in criminal trials — a debate that hasn't gone away. In San Francisco, advocates for mental health services pointed to the trial as evidence that the city needed better systems for identifying and treating individuals in psychological crisis before they reached a point of violence. Organizations including the San Francisco Mental Health Association pushed for expanded community mental health funding through the early 1980s, with mixed results. The broader legal question — how much weight courts should give to psychiatric testimony — remains contested in California and elsewhere, with the White case serving as a reference point in law school curricula and bar exam materials.

Notable Residents

San Francisco has been home to numerous influential figures, and few left a mark as lasting as Harvey Milk and George Moscone, whose lives and deaths were central to the Dan White trial. Harvey Milk was born in Woodmere, New York, in 1930 and moved to San Francisco in the early 1970s, settling in the Castro District and opening a camera shop on Castro Street that became a hub for neighborhood organizing. His election to the San Francisco Board of Supervisors in November 1977 made him the first openly gay person elected to public office in California and one of the first in the country. During his eleven months in office, Milk authored a landmark gay rights ordinance and successfully defeated the Briggs Initiative (Proposition 6), a statewide ballot measure that would have banned gay people from teaching in California public schools.

George Moscone served as mayor of San Francisco from January 1976 until his death. Before becoming mayor, he had served in the California State Senate, where he authored the 1975 bill that decriminalized consensual adult sexual conduct in California. As mayor, he was known for broadening appointments to city commissions to include women, minorities, and LGBTQ+ residents in numbers that had no precedent in San Francisco's history. His administration expanded public health services and supported affordable housing initiatives during a period of rapid gentrification pressure in the city. He was 49 years old when he was killed. The Moscone Convention Center, opened in 1981 and expanded several times since, was named in his honor. Harvey Milk's legacy is commemorated through the Harvey Milk Terminal (Terminal 1) at San Francisco International Airport, renamed in 2019, as well as through Harvey Milk Day, an official California day of special significance observed on May 22, his birthday.

Economy

The Dan White trial drew sustained national media attention to San Francisco throughout the spring of 1979, with effects on the city that were immediate but difficult to separate from the broader social upheaval of the period. The White Night Riots on May 21, 1979 — the night the verdict was announced — caused an estimated $1 million in property damage concentrated around City Hall and the Civic Center area, affecting businesses in the immediate vicinity. The riots also imposed significant costs on the San Francisco Police Department through overtime and equipment replacement.

In the longer term, the trial's economic legacy is bound up with the broader political changes it helped set in motion. The galvanizing effect of the assassinations on LGBTQ+ residents contributed to a demographic and commercial strengthening of the Castro District through the early 1980s. Businesses catering to the gay community expanded, tourism to the neighborhood increased, and the Castro became one of the city's economically distinctive commercial corridors. Those trends were then interrupted and complicated by the emergence of the AIDS crisis, which devastated the Castro community beginning in the early 1980s and led to renewed demands for city and state health funding.

The legal reform triggered by the trial — Proposition 8's abolition of the diminished capacity defense — had indirect economic effects on the criminal justice system. Prosecutors found it easier to secure convictions on more serious charges without the threat of diminished capacity arguments reducing murder charges to manslaughter. Defense attorneys faced higher costs in mounting mental health defenses that had to meet the stricter insanity standard. The downstream effects on incarceration rates and public defense costs were real, though calculating them precisely in relation to any single legal change is not straightforward.

San Francisco's economy in the decades since has been driven primarily by the technology industry, tourism, and financial services — forces largely independent of the trial's direct legacy. But the city's identity as a progressive, LGBTQ+-inclusive municipality, reinforced in part by the political aftermath of the Milk and Moscone assassinations, has shaped its economic brand in ways that continue to attract residents, businesses, and visitors.

Attractions

San Francisco has numerous sites connected to the events of 1978 and the trial that followed. San Francisco City Hall, at 1 Dr. Carlton B. Goodlett Place in the Civic Center, is where the murders took place on November 27, 1978. The building, completed in 1915 and designed by architects Bakewell and Brown in the Beaux-Arts style, features one of the tallest domes in the United States — taller than the U.S. Capitol's. It offers public tours that include information about the building's political history. A plaque near the mayor's suite on the second floor marks the general area of the Moscone shooting, and the building's public spaces are regularly used for civic memorials and events connected to the 1978 assassinations, particularly on November 27 each year.

The Castro District, roughly centered on Castro Street between 17th and 19th Streets, is the neighborhood most closely associated with Harvey Milk's life and legacy. The storefront at 575 Castro Street, which housed Milk's camera shop and served as his campaign headquarters, is a designated San Francisco landmark. The district hosts the annual Harvey Milk Day events on May 22 and serves as the gathering point for the Castro Street Fair, held each October. The GLBT Historical Society Museum, located at 4127 18th Street in the Castro, maintains extensive archives related to Milk, the 1978 assassinations, and the trial's aftermath, and is open to the public.

Harvey Milk Terminal (Terminal 1) at San Francisco International Airport was renamed in Milk's honor in 2019 following a unanimous vote by the San Francisco Board of Supervisors. The terminal serves several major domestic carriers and includes a permanent historical display about Milk's life and significance. Grace Cathedral on Nob Hill, which hosted memorial services for both Moscone and Milk in the days following the murders, remains an active religious and cultural site and is open to visitors.

Getting There

San Francisco is accessible by several modes of transport. San Francisco International Airport (SFO), located approximately 14 miles south of downtown, offers direct service to major domestic and international destinations. From SFO, the Bay Area Rapid Transit (BART) system runs directly to downtown San Francisco stations including Civic Center/UN Plaza, which is a short walk from City Hall. The Castro District is served by BART's Castro Station on the Market Street line. Travel time from SFO to downtown by BART is roughly 30 minutes.

Amtrak serves the Bay Area via its Emeryville station in the East Bay, with connecting bus service (the Amtrak Thruway bus) running directly to San Francisco's Ferry Building and downtown. For travelers coming from within California, the Capitol Corridor and San Joaquin routes offer frequent service from Sacramento, the Central Valley, and the East Bay.

By car, San Francisco is reached via Interstate 80 from the east (across the Bay Bridge), U.S. Route 101 from the north (across the Golden Gate Bridge) or south (via the Peninsula), and Interstate 280 from the south. Parking in the Civic Center and Castro neighborhoods is limited; the city's Municipal Railway (Muni) bus and light rail network, combined with BART, covers both areas efficiently. Ride-share services operate throughout the city. The Castro District is also walkable from the Church Street Muni Metro station on the N-Judah and J-Church lines.

Neighborhoods

San Francisco's neighborhoods each carry distinct histories, and several are directly tied to the events surrounding the Dan White trial. The Castro District, bounded roughly by Market Street to the north, Noe Street to the east, 21st Street to the south, and Douglass Street to the west, was Harvey Milk's political base and remains the geographic center of the city's LGBTQ+ community. It was here that the candlelight march of November 27, 1978 originated, drawing tens of thousands of people to City Hall in the hours after the assassinations were announced. It was also the Castro's streets and bars that bore the brunt of the police retaliation following the White Night Riots six months later.

The Civic Center neighborhood, where City Hall stands alongside the main branch of the San Francisco Public Library, the Asian Art Museum, and the Bill Graham Civic Auditorium, was the site of both the murders and the most intense violence during the riots. The neighborhood has historically been a gathering point for political protest, and that tradition continued through the AIDS crisis vigils of the 1980s and subsequent civic demonstrations. Today it is also home to the San Francisco Superior Court, where criminal trials including White's were held.

The Mission District, south of the Castro, has its own distinct relationship to the political era of the late 1970s