A federal judge has granted class action status to a lawsuit challenging the New York City police tactic known as “stop and frisk.” Judge Shira Scheindlin ruled a group of Bronx residents can bring claims on behalf of hundreds, perhaps thousands, of their neighbors for being accosted outside of the buildings in which they live. The ruling comes one month after Judge Scheindlin ordered police to cease the “stop and frisks” outside of residential buildings under the city’s so-called Clean Halls program.