The only thing worth talking about is the mission "No Russian", which you are heavily warned by the game itself. I do think it was put in for pure shock value. Aside from possible anti-terrorism criticisms on the US, it just seems too easy to sit back and let the event unfold. I actually haven't been too fond on these "extreme" first person events from this series lately, it's becoming a lame gimmick.
What next, they're gonna make us shoot puppies and bury us alive? Read more at OCModShop.