Vio­lent crime in the United States fell for the fifth con­sec­u­tive year in 2011 with murder, rape and rob­bery all going down, although crime remains a serious problem in many urban areas, the FBI said on Monday.

James Alan Fox, a crim­i­nol­o­gist at North­eastern Uni­ver­sity, said crime has con­tinued to decline from a peak in the 1990s but now is decreasing at a slower rate.

I call it the limbo stick effect,” Fox said. ” You can only go so low. You’re never going to get down to zero crime.”

Read the article at CNN →