'The man who gave the Black Panther Party some of its first firearms and weapons training – which preceded fatal shootouts with Oakland police in the turbulent 1960s – was an undercover FBI informer, according to a former bureau agent and an FBI report.

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 Legislature.

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: Man Who Armed Black Panthers was FBI Informant, Records Show