In 2016, CCTV footage of a young black man, Larnell Bruce, being run over and killed by a man shocked America. His killer, Russell Courtier, was a member of a white supremacist gang.

Why do people join these gangs and what does it take to get in one? Journalist Mobeen Azhar travelled deep into the heart of America’s far right movement to find out.

Watch the two-part documentary ‘A Black and White killing: The Case that Shook America’, which covers the trial of Russell Courtier, on Sunday 25 August and Monday 26 August at 21:00, on BBC Two. It is will be available to watch on iPlayer soon after broadcast.