The war on cops, ideological and sometimes lethal, may be expanding into a broader race war, in which only one side fights. The thugs who torched businesses and police cars, assaulted cops, and shot at firemen in northwestern Milwaukee on Saturday night went after “white bitches,” among other targets. (The riots were inspired by the fatal police shooting of Sylville K. Smith, a black man. Smith, who had an extensive arrest record, including for a shooting, fled from officers after a traffic stop while carrying a stolen handgun; he refused commands to drop the gun. Wisconsin governor Scott Walker has activated the state’s National Guard and declared a state of emergency, but violence continued into Monday night, with four officers injured, three squad cars damaged, and multiple businesses burned down.) The Black Lives Matter-inspired assassin who murdered five police officers in Dallas in July 2016 said that he wanted to kill white people, as well as white cops. The vitriol that officers working in urban areas now encounter on a daily basis is inflected with racism.