Here's a terrible reminder of why we need the Second Amendment.
Governments tend to kill far more of their own people than wars ever do.
Just to give perspective on this incredible murder by government, if all these bodies were laid head to toe, with the average height being 5', then they would circle the earth ten times. Also, this democide murdered 6 times more people than died in combat in all the foreign and internal wars of the century. Finally, given popular estimates of the dead in a major nuclear war, this total democide is as though such a war did occur, but with its dead spread over a century.