Harvey Milk Day is organized by the Harvey Milk Foundation and celebrated globally each year held May 22 in memory of Harvey Milk, a gay rights activist assassinated in 1978.

In California, Harvey Milk Day is recognized as a day of special significance for public schools. The day was established by Governor Arnold Schwarzenegger in 2009 following the success of the award-winning feature film Milk retracing Milk's life.

Harvey Bernard Milk (May 22, 1930 – November 27, 1978) was an American politician who became the first openly gay man to be elected to public office in California when he won a seat on the San Francisco Board of Supervisors. Politics and gay activism were not his early interests; he was not open about his homosexuality and did not participate in civic matters until around the age of 40, after his experiences in the counterculture of the 1960s.

Milk moved from New York City to settle in San Francisco in 1972 amid a migration of gay men to the Castro District. He took advantage of the growing political and economic power of the neighborhood to promote his interests, and ran unsuccessfully for political office three times. His theatrical campaigns earned him increasing popularity, and Milk won a seat as a city supervisor in 1977, part of the broader social changes the city was experiencing.

Milk served almost 11 months in office and was responsible for passing a stringent gay rights ordinance for the city. On November 27, 1978, Milk and Mayor George Moscone were assassinated by Dan White, another city supervisor who had recently resigned but wanted his job back. Milk's election was made possible by and was a key component of a shift in San Francisco politics. The assassinations and the ensuing events were the result of continuing ideological conflicts in the city.

Dustin Lance Black (born June 10, 1974) is an American screenwriter, director, film and television producer, and LGBT rights activist. He has won two Writers Guild of America Awards for his work on the television series Big Love and an Academy Award for the 2008 film Milk.

Black is a Founding Board Member of the American Foundation for Equal Rights and writer of 8, a staged reenactment of the federal trial that led to an appellate court's overturn of California's Proposition 8.

Black was born in Sacramento, California and grew up in a Mormon household, in San Antonio, Texas and later moved to Salinas, California when his mother remarried. His father had been the Mormon missionary who had baptized Black's mother earlier.

Growing up surrounded by Mormon culture and military bases, Black worried about his sexuality. He told himself, "I'm going to hell. And if I ever admit it, I'll be hurt, and I'll be brought down" when he found himself attracted to a boy in his neighborhood at the age of six or seven. He says that his "acute awareness" of his sexuality made him dark, shy and at times suicidal, and he came out in his senior year of college.

Cleve Jones (born October 11, 1954) is an American AIDS and LGBT rights activist. He conceived of the NAMES Project AIDS Memorial Quilt which has become, at 54 tons, the world's largest piece of community folk art as of 2009. In 1983, at the onset of the AIDS pandemic Jones co-founded the San Francisco AIDS Foundation which has grown into one of the largest and most influential People with AIDS advocacy organizations in the United States.

Jones was born in West Lafayette, Indiana, and raised in Scottsdale, Arizona. His career as an activist began in San Francisco during the turbulent 1970s when he was befriended by pioneer gay rights leader Harvey Milk. He worked as a student intern in Milk’s office while studying political science at San Francisco State University. In 1978, Milk was assassinated along with San Francisco’s Mayor George Moscone. Jones went to work in the district office of State Assemblyman Art Agnos.

In 1983, when AIDS was still a new and poorly understood threat, Jones co-founded the San Francisco AIDS Foundation. Jones conceived the idea of the AIDS Memorial Quilt at a candlelight memorial for Harvey Milk in 1985 and in 1987 created the first quilt panel in honor of his friend Marvin Feldman. The AIDS Memorial Quilt has grown to become the world’s largest community arts project, memorializing the lives of over 85,000 Americans killed by AIDS.

Kevin Maurice Johnson (born March 4, 1966) is the current mayor of Sacramento, the capital city of the U.S. state of California. He is Sacramento's first African American mayor. Prior to entering politics, Johnson was a professional basketball player in the NBA, playing point guard for the Cleveland Cavaliers and the Phoenix Suns. As a player, he was a three-time NBA All-Star and five-time All-NBA selection who holds many records for the Phoenix Suns franchise. At University of California, Berkeley, Johnson had been a two-time All-Pac-10 Conference player who was also an honorable-mention All-American by the Associated Press sportswriters. Johnson was a 2000 graduate of the Harvard Divinity School Summer Leadership Institute, a program that prepares students for work in faith-based urban economic revitalization. He also has a B.A. in Political Science from UC Berkeley that he completed after his initial retirement from the NBA.

Johnson, the son of Georgia West and Lawrence Johnson, was born March 4, 1966 in Sacramento. After Johnson's father drowned in an accident in the Sacramento River, he was raised by his grandparents, the Peat family. He attended Sacramento High School, where he starred in both baseball and basketball and led the state of California in scoring (32.5 ppg) during his senior year.