Again, as I posted below, the quote is reports of major crime dropped during the slowdown period. Arrests remained constant, reports dropped. Reports of crime != crime. I maintain: focus on the bodycount. Corpses can't be hidden.
It does put a hole in the "broken windows" theory of policing. Supposedly if you have cops around all the time busting everyone for minor violations, things won't escalate to larger crimes. But in this case, with the cops doing pretty much the minimum they could get away with, more serious crimes didn't go up.