Wouldn't YOU have become an insurgent?

Let's play make-believe for a moment.

Pretend that America is not America but is some low-on-the-totem-pole third-world country... and that Iraq is the superpower of the world. And let's say that the president of Iraq doesn't like our president (and maybe many of us don't like him very much either) and, largely because of this, the president of Iraq decides to launch an attack against our country. The death toll among our people is astronomical. There is an invading force in our country, our home, which has the power to wipe us out at any moment. And, to add insult to injury, they have the temerity to call themselves "liberators".

Would you not take up arms against these invaders? I know I would.

And that is what I was thinking about the whole time I was watching the movie. Every time Chris Kyle drew down on an "insurgent" I saw myself at the receiving end of that rifle.