“During the 1990s, crime rates in New York City dropped dramatically, even more than in the United States as a whole. Violent crime declined by more than 56 percent in the City, compared to about 28 percent in the nation as whole. Property crimes tumbled by about 65 percent, but fell only 26 percent nationally.”
http://www.nber.org/digest/jan03/w9061.html
Couldn’t that have been due to policies that were implemented other than police stopping and searching people arbitrarily ? Which is certainly unconsitutional no matter how you slice it.