As someone who recently moved to this city, he's not entirely wrong...in 2 years and without ever going to the "bad" parts of mine, I've been mugged in broad daylight, my roommate was assaulted randomly for no reason after his car broke down, I've had a guy threaten to kill me and follow me around when he sees me, and I get a postcard in the mail every other week or so telling me about another one of the homeless guys within a couple blocks of me's sex crimes, which almost always includes multiple offenses and at least one rape. One of my neighbors had two guys come run up at her, grab her dog, and run away with it. I've had 0 encounters with anything like this in the suburbs.