*Numbers indicate total firearms-related deaths, 2007-2010.
To me, this doesn't indicate firearm violence (just homicides), but rather accidental deaths and suicide as well. It's reasonable to believe that those states with the most guns are going to have more accidents and suicides. Again, laws will do nothing for this. Do you have a graph of strictly homicides vs. gun laws?
Also, though your other graphs point out that America has a high number of homicides and violent deaths compared to the other countries, I also do not feel that this is due to the guns. That's like saying when ice cream sales increase, so does crime. The true correlation is that when the temperature increases, so does crime and ice cream sales. Just because you can show two things trend together, does not mean that one causes the other.
What we really have in the country is a culture problem. When we can figure out why that is, we can get on with how to fix it.