Our liberal friends will tell you that the drop in crime starting in 1994 was due to the AWB, and nothing you say will convince them otherwise. You can bring up Conceal Carry laws exploding in nearly every state, you can cite demographics as the last of the baby boomers aged out of "youth limited offender" category with very few Gen X aging in to that category... but it will all be due to the AWB in their mind.
That and facts are racist.
See my sig line for some insight about our liberal friends.