The USS Medgar Evers? The USS John Murtha? The USS Cesar Chavez? Our Navy Secretary, Ray Mabus, has this diversity thing down cold. Each one of those ships was in a class that previous names of their sister ships had nothing to do with civil rights, or corrupt Democratic politicians. Ships are usually named after states, cities, even famous explorers and war heroes. But Mabus has injected partisanship into this tradition, naming another ship for Democrat Gabriel Giffords, who has shown courage in her recovery from an assassination attempt but had expressed little interest in the military during her career...