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."
James 'Whitey' Bulger is not the only one facing scrutiny as his trial begins Tuesday. So is the FBI, which infamously used Bulger as an informant for years. Today the FBI relies more heavily than ever on confidential informants, but under new rules.