It's a Thursday afternoon and William H. "Billy" Murphy Jr., as is often the case, seems to be doing 10 things at once. The phone rings. And he's spouting off about Mayor Martin O'Malley's response to a radio ad in which Murphy is featured, accusing the Baltimore Police Department of unlawfully arresting thousands of black residents. Murphy paces. Advertisement "Did you hear what O'Malley said today?" he booms incredulously into the phone. "He said that Governor Ehrlich was lying about this! He didn't say disagreeing. He said lying!" Fiery as ever, Murphy, 63, is a force to be reckoned with...