There's a generational shift going on here. That's why the anti-gun backlash "feels different" this time. It may or may not have any different immediate results, but it's the trend for the foreseeable future.
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A case in point: the only firearm my own father ever owned was a collector's piece that he inherited late in his life, and he kept it disassembled and never attempted to fire it. Yet I heard him say this, more than once: "If every Jew in Europe had met the Gestapo at the front door with a gun in his hand..."
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Americans have always seen firearms as tools of self-defense. Those Colt "Peacemaker" revolvers were called "the great equalizer" in the old West. But the idea that armed citizens are going to fight off invading armies is a recent development, promoted heavily by NRA lobbyists who were heavily supported by gun manufacturers. It may have had something to do with the social upheaval of the '70s, and it might just have been a marketing tool to sell a new product. But the fantasy today is that AR15-slinging civilians are going to fight their own U.S. government when it inevitably becomes a dictatorship, and that fantasy has been supported by recent court decisions. But the Second Amendment requires interpretation, and for most of history it has been interpreted differently. Half of all U.S. firearms are held by three percent of the population (those are the guys getting ready for war); 80 percent of Americans own no firearms at all.
http://www.slate.com/articles/news_...rverted_the_meaning_of_the_2nd_amendment.html
http://www.slate.com/articles/news_.../second_amendment_allows_for_gun_control.html
http://www.businessinsider.com/gun-industry-funds-nra-2013-1
https://www.rollingstone.com/politics/news/the-nra-vs-america-20130131