20 years ago today the LAPD's beat down of Rodney King was captured by an onlooker's handycam. Since then - from Robert Dziekanski to the G20 - amateur videos of police have raised questions about their conduct. So what's the legacy of Rodney King? We look at the impact of his case - and the proliferation of citizen journalists - on policing.

This is your brain... on sports? Dani Probert, the widow of former NHL player Bob Probert joins us tonight. Probert spent 16 seasons with the Detroit Red Wings and the Chicago Blackhawks, which adds up to over 200 fights on the ice. He volunteered his brain to science to be studied, which has revealed he had degenerative brain disease. This evening, we find out what sports is doing to our minds.