This week, people were shocked when the Drudge Report posted a giant picture of Hitler over a headline speculating that the White House will proceed with executive orders to limit access to firearms. The proposed orders are exceedingly tame, but Drudge’s reaction is actually a common conservative response to any invocation of gun control. The NRA, Fox News, Fox News (again), Alex Jones, email chains, Joe “the Plumber” Wurzelbacher, Gun Owners of America, etc., all agree that gun control was critical to Hitler’s rise to power. Jews for the Preservation of Firearms Ownership (“America’s most aggressive defender of firearms ownership”)...