Depends on what you call "violent crime".
If you count all the support that Wachovia/Wells Fargo, Citibank, and Chase give to the Mexican and South American drug cartels in the form of money laundering, financing airplanes, and transferring funds for the purpose of purchasing military-grade munitions from clandestine sources, then I'd say the last few years have seen a DRAMATIC increase of "violent crime" in Charlotte, since most of those banks have major regional (if not national) HQs in Charlotte.
There is blood and cocaine on EVERY dollar that comes out of a bank in Charlotte...