The NYPD should reread Terry vs. Ohio, a landmark 1968 Supreme Court case

From across the street, Cleveland Police Officer Martin McFadden observed two men standing on the corner repeating a peculiar ritual. One of the men strolled past some stores, paused to look in a shop window, continued walking to the end of the block — then turned around to walk the same block, paused to look in the same shop window and rejoined his companion.