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
Castro District, San Francisco of their sexuality. Many settled in the Bay Area, San Francisco and Sausalito. In San Francisco, an established gay community had begun in numerous areas including Polk Street (which used to be regarded as the city's gay center from the 1950s to the early 1980s), the Tenderloin and South of Market. The 1950s saw large amounts of families moving out of the Castro to the suburbs in what became known as the "White flight", leaving open large amounts of real estate and creating attractive locations for gay purchasers. By 1963, the Castro's first gay bar was opened called the "Missouri