Diefenbaker staked out a position on the populist left of the PC party. Though most Canadians were content to look to Parliament for protection of civil liberties, Diefenbaker called for a Bill of Rights, calling it "the only way to stop the march on the part of the government towards arbitrary power". He objected to the great powers used by the Mackenzie King government to attempt to root out Soviet spies after the war, such as imprisonment without trial, and complained about the government's proclivity for letting its wartime powers become permanent.