In an eight block stretch of Brownsville, Brooklyn -- one of the city's most notorious areas for violent crime--- the NYPD's controversial "stop and frisk" policy has been employed at a rate unmatched elsewhere in the New York, resulting in 52,000 searches over the past few years, a published report said today. Between January, 2006 and March, 2010 the NYPD made nearly 52,000 stops in the eight blocks and three public housing complexes in the area, according to a New York Times report that analyzed data provided by the Police Department and two organizations, the Center for Constitutional Rights and the New York Civil Liberties Union.