Stop-and-frisk incidents are down 51 percent, while New York City's murder rate also decreased by 27 percent, the New York Daily News reported Wednesday.
Mayor Michael Bloomberg said the decrease in crime comes from fear of police stopping and questioning suspicious persons, according to the Daily News.
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However, New York Civil Liberties Union representative Donna Lieberman told CBS News that the data were not necessarily related.
NYPD officers have been testifying about stop and frisk at a trial this spring.
Critics of the program note that cops mostly stop minorities, and they say this reflects racially biased stops.