In March, President Bush participated in the Radio and Television Correspondents Dinner, a traditional event in Washington where the president provides laughs at the expense of himself and members of the administration.

His choice of comedic material was deeply offensive: a Lettermanesque slide show depicting his futile personal hunt for weapons of mass destruction under tables and desks in the White House. I couldn't believe that he was laughing off a mistake while it was killing or maiming thousands of U.S. troops. Was the Tet Offensive comedy gold for LBJ in 1968?

David Corn, a columnist for The Nation, was present at the event and similarly unamused: "I wondered what the spouse, child or parent of a soldier killed in Iraq would have felt if they had been watching C-SPAN and saw the commander-in-chief mocking the supposed justification for the war that claimed their loved ones."

A new campaign ad from Win Back Respect answers Corn's question.