Another attack in London, virtual referees, and Odinism

There's been another vehicle attack in London: Last night, a man drove a van into a group of Muslim worshippers leaving a mosque — we have the latest from our producer in London who lives nearby Also, we look at why white supremacists in the US are attracted to a northern European mythology called Odinism. And, South African trumpeter Hugh Masekela remembers performing with Ravi Shankar at the Monterey Pop music festival five decades ago.