help finding an episode on misinformation

Hi,

I've done a bit of searching but have been unable to find an episode I'm looking for., The story I'm interested in was the UK race riots of last year, and specifically a study showing that misinformation DIDN'T cause the riots (as I recall, the riots INCREASED after accurate information got out). I'm interested in both the episode and the study if anyone knows where to look.

Edit: Solved, episode 233 with Dan Williams. Thanks!