Rubio, Antifa and the global threat from the far-left

On Thursday in Washington DC, Marco Rubio, the Secretary of State, will host an international summit on the threat posed by "the resurgence of transnational far-left terrorism.” There will be a particular focus on the loosely composed group the Trump administration calls Antifa. What is this group? Is it a significant threat? Or is there something motivating the DC summit? BBC journalist Mike Wendling joins us to discuss whether the Trump administration is right to worry about far-left groups like Antifa. (Photo: Anti-fascist demonstrators wave an Antifa flag, which is green and has an orange, green and white circular logo in the middle, in the UK, 2016. Credit: Gareth Fuller/Press Association) Producers: Cat Farnsworth, Aron Keller and Hannah Moore Executive producer: James Shield Sound engineer: Travis Evans Senior news editor: China Collins