Britain First: The "Most Dangerous Far-right Party"?

Britain First are far-right political party who say they want Islam to be banned and would hang their enemies if in power. The group has more followers on Facebook than any other political party in the UK and have just announced their leader is running for Mayor of London. The anti-racism group Hope Not Hate say they're "the most dangerous group to have emerged on the British far-right scene for several years” The Victoria Derbyshire programme’s Benjamin Zand finds out who they are and meets them at one of their protests in Rotherham.