So this thread is sort of meant to piggyback on eeyn's on the issue of Doing Something in the wake of the recent shooting. So, here's a general presentation of facts that we'll need to deal with in discussing firearm violence:
1) Homicides are at sixty-year lows. Seriously, our murder rate hasn't been this low since men wore dapper hats in public non ironically.
1a) America's homicide rates are generally way behind Western Europe and Canada, but ahead of the former USSR and developing world.