Why did the #BLM movement capture the imagination in 2020? What was it about the death of George Floyd that led to protests in more than 4,000 towns and cities worldwide? And what can we learn from our own reactions to footballers taking a knee, and dancers who perform routines depicting George Floyd’s killing on TV entertainment shows? Guests Prof Tessa McWatt and Prof Anshu Mondal discuss. Thanks to Sky, BBC, NBC, ITV and the Guardian for our news clips.