Last year, Chicago had 512 homicides; Detroit had 411; Philadelphia had 331; and Baltimore had 215. Those cities are joined by other dangerous cities ... and they also lead the nation in shootings, assaults, rapes and robberies. Pictured, a mourner views the funeral program of 15-year-old Hadiya Pendleton, who was murdered in Chicago after performing at President Obama’s inauguration. (Photo by Associated Press)