The band are preparing to embark on their final ever tour A welcome rush of blood to the head was most welcome straight after, as thrash-legends Slayer tore through a set of their noisiest material, including 'Hallowed Point', 'Angel of Death', and yes, 'Raining Blood'. A hilarious Facebook video of a dad telling his baby daughter she "can't go and see Slayer, baby" has ignited …