Wikipedia article on 100 Flowers, f k a the Urinals
Happy Squid site:
THE LAST and BLACK FLAG were both enthusiastic supporters of the URINALS, and frequently asked to have them as support. At Blackie’s (on LaBrea), the URINALS were on the bill the night BLACK FLAG was arrested on stage for disturbing the peace. Eventually, competence began to set in, and the material became more sophisticated, though its aggressive directness remained. The band felt uneasy using a moniker than no longer reflected the throwaway attitude of its early days. After much discussion, a new band name was decided upon, 100 FLOWERS, taken from the Maoist Cultural Revolution quotation, "Let 100 flowers bloom and 100 schools of thought contend."