Final answer:
Victor Garber played San Francisco Mayor George Moscone in the film 'Milk.' Both George Moscone and Supervisor Harvey Milk were assassinated by Dan White in 1978. Milk was the first openly gay elected official in California and a renowned gay rights advocate.
Step-by-step explanation:
In the film "Milk," actor Victor Garber portrayed San Francisco Mayor George Moscone, who was tragically assassinated along with Supervisor Harvey Milk on November 27, 1978. Harvey Milk was a historical figure, known as the first openly gay elected official in California, and a leading figure in the gay rights movement. In 1977, he played a pivotal role in passing a San Francisco civil rights law that banned discrimination based on sexual orientation. However, both Milk and Mayor Moscone were shot by former city council member Dan White, leading to memorial services and a significant march in San Francisco to honor their legacy.