Channel 4 News reports:
Abu Hamza preached that killing non-Muslims was justified even if there was no reason for it, the Old Bailey has heard.
"Killing an adulterer, even if he is a Muslin is OK. Killing a Kaffir (unbeliever) who is fighting you is OK.
"Killing a Kaffir for any reason you can say it is OK even if there is no reason for it," he told an audience.
A video of Hamza's talk given in September 1999 and entitled "Adherence to Islam in the Western World" was played to jurors trying him on race-hate allegations.
In it he says Islamic beliefs should be spread with the help of the sword.