A federal court judge ordered an independent monitor to oversee reforms to the New York City Police Department's stop-and-frisk practice after ruling the polarizing practice violated the United States Constitution, reports WSJ's Sean Gardiner.

In a ruling released Monday morning, two months after hearing nine weeks of testimony in a class-action lawsuit challenging the policy, Manhattan federal court judge Shira Scheindlin found that " the city acted with deliberate indifference toward the NYPD's practice of making unconstitutional...