In 1990, Heick announced on the AF telephone hotline that the group would appear in San Francisco's Union Square on the first Saturday in May. The message ran for a month prior to the event. Opponents of the AF held a Mayday demonstration three days prior, on May 1. On the day of the AF event, Heick arrived with 10 men and three women, and marched into 300 missile-throwing protesters. Police, seeing that the AF contingent was completely surrounded by violent counter protesters, moved in and encircled AF, separating the two groups. At this point, both the AF and SFPD were vastly outnumbered by counter protesters, who were hurling rocks, bottles and attacking both the officers and AF with 2x4 sign posts. Back-up officers began arriving on the scene and the police were able to get a patrol wagon into the park. All 13 AF members scrambled into the wagon (without handcuffs) and were whisked away for their own safety. Officers fought off the continuing attacks of the counter protesters who then fled the scene. There were a number of injuries on all sides.