Same as the level "No Russian" in MW2, which caused a massive shitstorm in the international media and was probably blamed for the recent events in Norway, it looks like MW3 has done it again, this time however it involves..
Watch the video for awe and effect on this website
http://www.gamepro.com/article/news/224636/modern-warfare-3s-child-killing-controversy/
I think it's rather sad personally that they have to resort to such controversal scenes within the games to garner attention from the media, free advertising I suppose.
Disconnect and self destruct, one bullet a time.