"'why don't you just go to some of the meetings and tell me who's there and what they talked about?'"

One of the Bay Area's most prominent radical activists of the era, Richard Masato Aoki was known as a fierce militant who touted his street-fighting abilities. He was a member of several radical groups before joining and arming the Panthers, whose members received international notoriety for brandishing weapons during patrols of the Oakland police and a protest at the state Capitol.

Aoki went on to work for 25 years as a teacher, counselor and administrator at the Peralta Community College District, and after his suicide in 2009, he was revered as a fearless radical.

But unbeknownst to his fellow activists, Aoki had served as an FBI intelligence informant, covertly filing reports on a wide range of Bay Area political groups, according to the bureau agent who recruited him.

Read More | "Activist Richard Aoki named as informant" | Seth Rosenfeld | ?SF Chronicle