There’s something different about those new police cars patrolling the streets of New York City. They look a lot like your standard NYPD cruisers. They are Ford Tauruses painted white with blue trim. They have the same departmental insignia, followed by the same familiar blue lettering. But there is still something amiss. If you study hard, you notice it: Instead of NYPD spelled out on the front doors, these cars have the letters MCP. And in place of the CPR acronym on the rear doors, standing for “Courtesy, Professionalism, Respect,” these cars again have MCP, this time fleshed out to...