MONTREAL (CP) - A painting showing the World Trade Center towers protruding from U.S. President George W. Bush's trousers was torn down and later restored at an art festival today at Concordia University. The painting was defaced and torn down by irate students before being restored later today. The painting depicts Bush wearing a cowboy hat, with the twin towers extending from his unzipped pants. Concordia student Ari Daniel called the painting a disgrace to the university on Wednesday. Daniel said it made light of the Sept. 11, 2001, terrorist attacks that killed almost 3,000 and destroyed the New York...