Every other western nation has seriously controlled guns and their level of gun violence is dramatically lower than in the US.
Cite needed.
Oh wait, I've got some cites you can use:
Our most conservative estimates show that by adopting shall-issue laws, states reduced murders by 8.5%, rapes by 5%, aggravated assaults by 7% and robbery by 3%. If those states that did not permit concealed handguns in 1992 had permitted them back then, citizens might have been spared approximately 1,570 murders, 4,177 rapes, 60,000 aggravated assaults and 12,000 robberies. To put it even more simply Criminals, we found, respond rationally to deterrence threats.
Source: More Guns Equal Less Violent Crime
by Professor John R. Lott, Jr.
University of Chicago Law School
This is one of the favorite arguments of gun control proponents, and yet the facts show that there is simply no correlation between gun control laws and murder or suicide rates across a wide spectrum of nations and cultures. In Israel and Switzerland, for example, a license to possess guns is available on demand to every law-abiding adult, and guns are easily obtainable in both nations. Both countries also allow widespread carrying of concealed firearms, and yet, admits Dr. Arthur Kellerman, one of the foremost medical advocates of gun control, Switzerland and Israel âoehave rates of homicide that are low despite rates of home firearm ownership that are at least as high as those in the United States.â A comparison of crime rates within Europe reveals no correlation between access to guns and crime.
Source: Gun Control: Myths and Realities
David Lampo, Cato Institute
According to the study, published last year in The Harvard Journal of Law and Public Policy, European nations with more guns had lower murder rates. As summarized in a brief filed by several criminologists and other scholars supporting the challenge to the Washington law, the seven nations with the most guns per capita had 1.2 murders annually for every 100,000 people. The rate in the nine nations with the fewest guns was 4.4.
Source: Gun Laws and Crime: A Complex Relationship
By ADAM LIPTAK, The New York Times