Question: On what date did the riots that Bob Kohler was a veteran of take place?
Sentence (from "Fed Up Queers"): The group was made up mostly of lesbians such as Jennifer Flynn (who later co-founded the New York City AIDS Housing Network as well as Health GAP), though notable participants also included gay rights pioneer and Stonewall riots veteran, Bob Kohler, and writer, Mattilda aka Matt Bernstein Sycamore.
Relevant evidence: Yes