Flickering blue lights at Chicago and Harding mark this corner of West Humboldt Park as a hotbed of violent crime and drug peddling. Below the flashing is a police surveillance camera running 24 hours a day. Protected by bulletproof glass, it has kept watch on one of the city’s most dangerous spots for nearly a year. But is the “blue-light district” that neighbors say these cameras create still a collection of streets ruled by fear, or has it turned them into new safe havens? Full Story