An appeals court rightly throws a biased judge off the city’s policing lawsuit.The U.S. Second Circuit Court of Appeals has confirmed what was already apparent to disinterested observers of the policing battles in New York City: the federal judge who ruled against the New York Police Department in August is deeply biased. U.S. District Judge Shira Scheindlin declared that the NYPD’s stop, question, and frisk practices were deliberately targeted against innocent black and Hispanic New Yorkers. That opinion rested on patent lies against the department and a profound ignorance of policing and crime. But as I argued earlier this year,...