1. 对抗暴政。现在已经是导弹核弹的时代了，枪有什么用？再说，你一个普通人，几条枪，对抗得了一批警察甚至军队？

First, see what happen in Iraq and Afghanistan.

300 million firearms in the hand of people is a tremendous deterrent against possible tyranny. There is no guarantee 警察军队 will function properly facing grass-root resistance.

谁来保护你拥枪的权利？你自己，家人，还是政府？ More than those, the gun owners and organizations like NRA.