From Doctors For Responsible Gun Ownership:

Europeans like to decry violence in America, calling it “America’s gun culture” while forgetting their share of political mayhem in their own house, including violence perpetrated by Jihadists as well as their own left-wing terrorists. But I enjoy reminding them that it was America’s “gun culture” that liberated Western Europeans from the Nazis during World War II and subsequently also protected all of free Europe from the Red Army and the rolling Soviet tanks during the Cold War. Moreover, I also like to remind them that as pusillanimous Europeans they may require further protection from the U.S. “gun culture” in the future!