Hitler forbade Jews to possess pretty much any weapons. Permits were only given to people of "undoubted reliability" who demonstrated a "need" for a gun. The law made it easy for Hitler to make sure his opponents couldn't get permits and thus had no access to firearms. Did Hitler ban gun ownership? Yes. Especially, if you were not a reliable ally of Hitler or were a Jew. And we all know what happened to the unarmed Jews
As horrible as the tragedy of Sandy Hook is there were other horrible tragedies in our history perpetrated by individuals, as well as our Government. One such tragedy was the Bath School Disaster in 1927 Bath, Michigan, in which a 55-year-old farmer bombed the school causing forty- five people to be killed, 38 of them children. The bombing was done by dynamite. Then there were twenty-one children under the age of 16 killed by the Federal Government at Waco, April 19, 1993. Fourteen of the children were under the age of six. Most of them were burnt alive.
As tragic as the event was at Sandy Hook there really is no way to prevent it from happening again because there is evil in the World. Nevertheless, you can limit the damage of the evil doer if there are good people on the scene who are armed and willing to take action against the perpetrator. That is one of the reasons for the Second Amendment, which is a God-given right of people to be armed to protect themselves and their families. But the main reason for the Second Amendment is for the people to defend themselves from an overreaching tyrannical government. And the Founders did envision the people being able to arm themselves with the weapons of the day, because they had fought a revolution against a tyrannical government. As Thomas Jefferson said, “The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.”