*SPOILER*
Just played it today. There's a level where it asks you if you want to skip it because they deem it offensive, which I can see how it is. Basically you're an undercover guy with some Russian terrorists and your job is to literally walk into an airport and shoot everyone. Seriously, you walk into the airport and there's a huge line to the metal detectors and you just mow everybody down. It was really surprising, and in a really "wow I'm ****ed in the head does this mean I'm a serial killer?" sort of way it was kind of fun.