It's a game, why is a death of a baby so shocking? It's not a baby, its a graphic image that the programmers etc. made. And I don't think that people who play this game will build their own plasma cutter to kill babies with. You're seriously overreacting. And actually, I thought it to be funny that you say that you will mow down mercenaries, civilians and other humans, but a baby? Oh no!
Anyways, I thought killing those babies was both amusing and satisfying. Then again, I use public transportation daily.