When the University of Notre Dame invited Barack Obama to address graduates at the May 17 commencement, both the school and the White House knew there would be protests. Right-wing Catholics demanded that Notre Dame rescind the invitation and descended on the campus when it did not. The day of the speech was marked by blood-covered baby dolls, a fulminating Alan Keyes and graduates with cutouts of baby feet on their mortarboards. Obama responded to the furor with an address about how to deal with disagreement in a democratic society. "We must find a way to live together as one human family," said Obama. "Our very survival has never required greater cooperation." Pope Benedict XVI declined to weigh in on the controversy, and three-quarters of American Catholics surveyed thought it was no big deal.