LONDON (AFP) - British PM David Cameron backed a call Friday to withdraw welfare benefits from rioters, as a London council became the first to begin evicting a tenant whose son faced unrest charges. Cameron said that people who loot and pillage their own community should no longer be allowed to live in social housing, reflecting the tough line he has taken over four nights of violence. Obviously, that will mean theyve got to be housed somewhere else - theyll have to find housing in the private sector -and that will be tougher for them, but they should have thought of that before they started burgling, he said.