Give me a break
The game is lame. It's sole purpose is shock value. Oh, and all of you who are saying, "Well, there are games where they kill Germans and stuff". Yeah, WAR games, not massacres. Can't you tell the difference?
I also love the one about, "only in America could this happen". Um, duh, it happens EVERY DAY in other countries. Let's talk about Iran, Iraq, Bosnia, palestine, MogaDishu, etc. The people in these countries run around killing innocents EVERY DAY! You just don't hear about it because it's so common.
Another one I that kills me is, "It's just a game". Yeah, to you maybe it is, but it makes light of a tragedy. If you had any talent whatsoever, you would be able to create something, not exploit something.
Good luck, dude. You're gonna need it.