After finishing graduate school, Riggs began working on many independent documentary productions in the Bay Area. He assisted documentary directors and producers initially as an assistant editor and later as a post-production supervisor or editor on documentaries about the American
arms race, Nicaragua, Central America, sexism and
disability rights. In 1989, Riggs completed the landmark experimental documentary film
Tongues Untied. It was broadcast on national PBS as part of the television series
P.O.V. In 1991, Riggs directed and produced
Anthem, a short documentary about African-American male sexuality. Collaborator Christiane Badgley served as co-director and editor. In 1991, Riggs founded Signifyin' Works, a non-profit production company that produces films about African-American history and culture. The 1992 documentary
Color Adjustment was Riggs's second film shown on
P.O.V., In 1992, Riggs directed the film
Non, Je Ne Regrette Rien (No Regret), in which five Black gay men who are HIV-positive discuss how they are battling the double stigmas surrounding their infection and homosexuality. It was edited by Nicole Atkinson. The series was screened on World AIDS Day and Day Without Art. It included the participation of Phil Zwickler, David Wojnarowicz, Ellen Spiro, Vivian Kleiman, and others. In 1993, Riggs received an
honorary doctorate from the
California College of Arts and Crafts. The same year, his experimental short
Anthem was featured in Frameline's collection of short films entitled ''Boys' Shorts: The New Queer Cinema''. Shortly after completing
Color Adjustment, Riggs began work on what was to be his final film, ''
Black Is...Black Ain't'', but he died at the age of 37 from complications caused by
AIDS on April 5, 1994, before he could complete it. The project was completed posthumously by the co-producer Nicole Atkinson and the co-director/editor Christiane Badgley, under the supervision of the board of directors of Signifyin' Works: Herman Gray, Vivian Kleiman, and Patricia Turner. All of his documentaries originated in video and transferred to film for public screenings at theaters, festivals and museums. At that time, video technology was not yet available for screening for large audiences at public venues. ==Writings==