DURHAM - Two young men were yesterday jailed for life at Durham Crown Court for "cruelly and mercilessly" shooting dead a father of three in an unprovoked street attack. Colin Moore (23), armed with a shotgun, and Ian Widdowson (21), wielding a big knife, attacked Mr Joe Clarke (43), and his son Robert (17), just because they glanced across a street at their noisy and drunken activities.