United Nations 1945, 50 governments met in San Francisco for a conference and started drafting the UN Charter, which was adopted on 25 June 1945 in the San Francisco Opera House, and signed on 26 June 1945 in the Herbst Theatre auditorium in the Veterans War Memorial Building. This charter took effect on 24 October 1945, when the UN began operation. The UN's mission to preserve world peace was complicated in its early decades during the Cold War between the United States and Soviet Union and their respective allies. Its missions have consisted primarily of unarmed military observers and lightly armed troops
San Francisco in the 1970s civil rights movement is a nationally recognized institution in the Bay Area. The Yerba Buena Center for the Arts (YBCA) celebrates Latino culture with a "Carnaval," every year, which is said to be the largest multi-cultural event in San Francisco. A gay San Francisco postal worker who was to be dismissed from service by the Civil Service Commission on the grounds of "moral incompetency" fought for his rights in the court, in November 1970, and was reinstated in the job. This marked the beginning of gay reforms. Many important skyscrapers in San Francisco were built in the 1970s. The Hilton