BBC on the Phone Call to Craig Futterman that Led to the Laquan McDonald Video Release

How a Whistleblower Brought Down Chicago Police Chief

On a late fall day in 2014, Craig Futterman, a professor at the University of Chicago Law School, received a phone call. He won't say who was on the other line or even where he was when he got the call.

"I want to be very careful not to give anything away that could identify them," he says now.

The mystery informant - someone "within Chicago law enforcement" according to Futterman - wanted to talk about an incident that had happened weeks earlier on 20 October, 2014, when a 17-year-old named Laquan McDonald was shot and killed by a Chicago police officer.

Read more at BBC News Magazine