Before there was Jon Stewart, Stephen Colbert, or Bill Maher, there were Mort Sahl, Stan Freberg, and Lenny Brucesatirists from the left who waged war against the political ironies, contradictions, and hypocrisies of their times through wry and scabrous comedy. Revel with a Cause tells the story of the politically engaged comedy that flourished in the 1950s and 60s.