San Francisco in the 1970s a disaster area. In the same year, with bankruptcy imminent for the San Francisco Ballet, a grassroots effort brought national attention to the association. Prior to the discovery of the first AIDS case in 1981, Dr. Selma Dritz, the city's medical epidemiologist, became alarmed at the increase in sexually transmitted diseases among the city's gay men, opining that epidemics had been triggered after 1974 by "political and social changes in the city". "The Grateful Dead Movie" was filmed in 1974 in San Francisco during the Grateful Dead's October 1974 five performances at the Winterland Ballroom. After the 1974 kidnapping of
San Francisco LovEvolution San Francisco LovEvolution LovEvolution (formerly San Francisco LovEvolution and San Francisco LoveFest) was a technoparade and festival that occurred annually in the Bay Area in late September and early October. From its inception in 2004 to 2009, the parade included 25 floats and started at San Francisco's 2nd and Market Streets. The parade continued all the way to San Francisco Civic Center Plaza. The 2009 parade drew over 100,000 people. The parade has its origins in Berlin's Loveparade which began in 1989. In 2003, the city denied the parade a permit and the event moved to San Francisco. In 2004,