I don't think that map on the left labeled FBI Statistics for Gun Violence is worth much. I looked at my own state and the ones on the east and west. In that map these states have a great deal of blue, meaning a high incidence of gun violence, but at the actual FBI website (
Murder in the US 2011) they say that in 2011 there were a total of 22 firearm murders in Maine, Vermont and New Hampshire. California has less blue and yet had 1220 firearm murders, so something definitely doesn't add up. The number of murders is 50 times greater, yet California's population density is only around four times as great. California had 3.2 murders per 100,000 people, New Hampshire had 0.5. Something is way amiss.
I also noticed that southern New Jersey, which is mostly rural, has a high incidence rate, while northern Jersey, which includes Newark, has a low rate - doesn't seem possible.
Either that map was created using very questionable criteria in order to give a misleading picture, or it's just made up.
--Percy