Not actually true, and a bit skewed by our much larger population. But let's take another look at that list of "advanced" countries and tell me how many of them have suffered under totalitarian rule or invasion within the last 100 years. Almost all of them.
Gun control, gun control, gun control.......That is all we hear every day. Guns are NOT THE PROBLEM DAMMIT, its the people BEHIND the gun. The gun is only a tool. When guns are no longer allowed in this country, another method of killing will surface, perhaps the bow and arrow, a knife, matches, whatever. I know many people who own or carry guns, not one of those guns has jumped out of the holster, closet or drawer and killed someone, nor did their owners. Find the crazies and ban them.