"The murder rate last year was far below the levels of 30 to 40 years ago, when violent crime, fueled partly by gang violence during the crack cocaine epidemic, reached a peak. The overall 3.9 percent increase in violent crime in 2015 was lower than levels from five and 10 years ago, the F.B.I. said."

I am sure that the crack cocaine epidemic back then was much worse than the heroine epidemic we have going on now. LOL!!!!