Much as I detest the pompous ****tard, Bloomberg had an excellent and rational defense of it, stating that the tactics were used in high reported crime areas because they were high reported crime areas, without regard to the racial or ethnic composition of the locality. Naturally there were a lot more Obama-sons and DREAMers frisked than youth of German-Irish or Chinese ancestry, since that turned out to be who was IN the high reported crime areas. Of course the civil rights industry would shoot back with 'Disparate Impact!' squeals.
There are ultimately limits to how far even our dysfunctional court system can allow that bullshit to go...for instance, does 'Disparate impact' mean that we need to stop letting such a disproportionate percentage of White and Asian kids finish high school?