Perhaps this is a publicity stunt?
Or do that game companies think it's just fine to market violence in the form of terrorism?
Here's one tiny mention I found about it at google, I'm sure that people at online gaming forums are discussing it all over the Internet.
"...So in the new Call of Duty game your first task is to wade into a crowded civilian airport and kill s___ relentlessly. Every last mom, pop and 2 kids on their way to Sochi (I think the massacre takes place in Russia? I can't be sure) is supposed to get it within the first five minutes. That barrel can't go cold. Get 'em....."
"....You are never supposed to question what it is you're actually doing, you are supposed to kill anything you're told to kill, reload, find the key and move on. And if you have trouble doing that then it's your fault for not being able to fit into the violent and absurd straitjacket of the 'modern' FPS."
I know nothing more, I found out about it on the news early this morning, I know nothing about gaming.