Marchers at a candlelight vigil in San Francisco, Calif., carry a banner to call attention to the continuing battle against AIDS on May 29, 1989. The city was home to the nation’s first AIDS special care unit. The unit, which opened in 1983, is the subject the documentary 5B.

Marchers at a candlelight vigil in San Francisco, Calif., carry a banner to call attention to the continuing battle against AIDS on May 29, 1989. The city was home to the nation’s first AIDS special care unit. The unit, which opened in 1983, is the subject the documentary 5B.