three people were injured Friday night when panicked audience members "self-evacuated" during a performance of the musical "Hamilton" in San Francisco, police said. A woman in the audience had a medical emergency during the scene in which the title character, Founding Father Alexander Hamilton, is shot on stage, said Joseph Tomlinson, public information officer for the San Francisco police. Audience members mistakenly thought there was a real-life shooting and rushed the exits, he said. CNN affiliate KPIX reported the someone in the audience shouted, "Gun!"