The Black Panther Party for Self-Defense was created to defend black communities in California from excessive force by the police. The Guardian’s Media Editor Jim Waterson examines whether their armed shadowing of police officers inadvertently went on to change the USA in an unexpected way. Presenter: Jim Waterson Producer: Robbie MacInnes An SPG production for BBC Radio 4
Eric Garner's mother reacts to decision not to bring charges against officer who held her son in chokehold.
The 28-year-old died in jail three days after being arrested in 2015 for failing to signal a lane change.
Police are investigating an incident in which officers grabbed a baby from a mother during her arrest.