If you've had an itchy trigger finger lately you might want to check this out. You play as the rebellious Good Guys (TM) who need to liberate near-future America from Evil Military Force (TM) because reasons. I haven't played it, but it seems like a good time. Homefront is currently available for free via Humble Bundle, so grab it while you can.
From what i've heard, this game wasn't exactly worth the price of admission when it first came out.
I'd give it a try now, but I have way too many other games to play at the moment, though I really appreciate you informing everyone about free games.