PORT-AU-PRINCE, Haiti (Reuters) - Gunmen shot and killed a Canadian police officer with the U.N. peacekeeping force in Haiti on Tuesday, a U.N. official said. The officer was shot on National Route 1 not far from Cite Soleil, a large slum in the capital Port-au-Prince, said Marc Jaquet, a spokesman for the police contingent of the U.N. peacekeeping force. Canada identified the victim as Mark Bourque, and said he was one of 25 police officers who went to Haiti in October as part of the Canadian Special Elections Contingent. The peacekeepers, now numbering nearly 9,000 soldiers and police, were sent...