If you consider blatant violation of the constitution to be a criminal act, it sounds as though the criminals got away in every one of these frisks.
If you consider government officials who violate the constitution to be criminals, then I'd argue that NYC's gun-grabbing criminals police are merely leveling the playing field for law-abiding citizens by arresting criminals with drugs, guns or illegal knives by using stop-and-frisk. In for a penny, in for a pound. I'm sure you'd prefer macro level solutions, but those are NYC's parameters. NYC's minorities don't want whites shooting back at their criminal relatives and the average white NYC resident doesn't want to play Charles Bronson's character in Death Wish. So they've settled on stop-and-frisk.