Detroit was once the industrial capital of the nation. But, decades of economic decline and a ruinous recession have turned the Motor City into America's crime capital. For the fourth years in a row, Forbes.com has rated Detroit, Michigan, as the most dangerous city in the country -- with a violent crime rate of 2,137 per 100,000 residents. Many of the other places on the list are also declining industrial powerhouse cities that have been left ravaged by dwindling blue-collar jobs and rising unemployment.Y'all just keep voting Democrat, though...