By examining Social Credit's anti-Semitic propaganda and the reaction of the Canadian Jewish Congress, Stingel details their mutual antagonism and explores why Congress was unable to stop Social Credit's blatant defamation. She argues that Congress's ineffective response was part of a broader problem in which passivity and a belief in "quiet diplomacy" undermined many of its efforts to combat intolerance. Stingel shows that both Social Credit and Congress changed considerably in the post-war period, as Social Credit abandoned its anti-Semitic trappings and Congress gradually adopted an assertive and pugnacious public relations philosophy that made it a champion of human rights in Canada. Social Discredit offers a fresh perspective on both the Social Credit movement and the Canadian Jewish Congress, substantively revising Social Credit historiography and providing a valuable addition to Canadian Jewish studies.