The city has boosted foot patrols in high-crime areas and is adding again to a downsized police force. It's too soon to say whether that explains a 33 percent drop in the homicide rate – or whether the improvement can be sustained.
Crime groups including the Mafia have long provoked both fear and fascination. Sometimes mob bosses have risen to wield extraordinary power – seemingly out of reach of the law – in cities in the US and beyond. And often they fall just as spectacularly. Here's a quiz that will test (and elevate) your street smarts in the world of "wise guys."