Watch Rethinking Radicalisation |

Watch documentary | On May 22, 2017, a 22-year-old Manchester-born man of Libyan descent detonated a home-made bomb at a pop concert. Twenty-three people, including the attacker, were killed. The attack came 16 years after the declaration of the so-called "War on Terror" and was one of four major reported attacks in Britain in 2017 alone.