Bay State politicians are defending an unlicensed radio station that was shut down this week by the Federal Communications Commission, but prosecutors say the crackdown was necessary to prevent a “public safety hazard.” U.S. Marshals and the FCC’s Enforcement Bureau shut down Touch 106.1 FM, an unlicensed Dorchester station, Thursday and seized radio equipment, according to U.S. Attorney Carmen Ortiz. Gov. Deval Patrick yesterday said he was “incredibly disappointed” by the raid and plans to ask the U.S. Attorney’s office to back down. “You’d like to think of them bringing more of a problem-solving approach,” he said. “Touch is a...