the "Crack Epidemic" really didn't start till 1984. Though this doubled the murder rates in teens in minority groups it doesn't explain the 1970 - 1984 rise. Th

the "Crack Epidemic" really didn't start till 1984. Though this doubled the murder rates in teens in minority groups it doesn't explain the 1970 - 1984 rise. Though the lead gasoline seems crazy but very interesting.