Ahh, deflection. It is entirely inappropriate to link to a website with the implication of 'do your own research' when asked a direct question of you personally.
It appears that in spite of criticizing Lott's research as invalid, they have no problem claiming the discredited Kellerman study supports their view.
Their answer appears to be to ban guns (although they won't come right out and say it) and use other countries with a vastly different culture surrounding guns and with vastly lower number of guns as 'evidence' of how gun control works. It's interesting they only discuss 'developed' countries even though undeveloped ones have gun laws too. Mexico has a ban on guns, doesn't seem to be stopping the bloodshed down there.
Regardless of the back and forth "statistics" war, there is no logic in banning guns. All the mass shootings occur where guns are already banned (e.g. VT, Columbine, Omaha mall, Utah mall, Amish schoolhouse, Northern IL Univ., the recent nursing home, etc.).
Why don't they occur in police stations or shooting ranges, where everyone is armed all the time? There are large collections of "assault weapons" at these locations just waiting to assault someone, and they're "going off" all day long at the shooting range. According to the gun control lobby, all of us who attend shooting ranges should have killed one another by now--or, at least, our vicious "assault weapons" should have killed us.
Police and the military have huge arsenals, and yet they don't routinely perpetrate mass murders. They have "easy access," as you put it. What's the difference? Are police officers simply of higher moral fiber than us lowly civilians? What a joke. Are their "assault weapons" not working correctly? Don't they know they're just carrying around ticking time bombs on their belts? The numbers game and the anti-gun "logic" would predict that police and military personnel would have the highest rates of violence in society.
What about concealed pistol license holders? They carry guns around all the time. They must be violent, right? Try looking up the statistics from your local county gun board. You'll find that the rates of violent crime among concealed pistol license holders are FAR lower than that of the rest of society. You're SAFER with a concealed pistol license holder than with your next door neighbor.
The U.S. DOJ, FBI, CDC, and NIH have been unable to prove a link between gun control and violent crime. The Supreme Court realizes the futility of it, as well. It's nothing more than passing laws to affect those who don't abide by them. That will never make sense or work. Cite all the statistics you like.
History has numerous examples of what happens when citizens are forcibly disarmed by their government. Hitler's gun control laws worked wonders, and we have a literal translation of a large portion of one of them in effect in the U.S.--the Gun Control Act of 1968. Thomas Dodd (Chris Dodd's father) was on the Nuremberg trials and acquired some of Hitler's belongings. He had the Library of Congress translate one of Hitler's gun control laws into English, and it was later introduced into Congress and passed after RFK was shot. Illogical gun-control laws always follow shootings.
When only the government and criminals have guns, where does that leave us? The ironic thing is that gun control laws are enforced by men with guns.