I always thought it was funny that people freaked out over this. They didn't even bat an eye at prototype. And killing civilians was, if anything, more necessary in that game than in MW2. Consuming civilians gave you health and access to a disguise which is very helpful. In MW2, it's optional and yields no benefits. Prototype rewards you for killing hundreds of people...MW2 doesn't. Maybe it's the idea that you're a CIA agent but...still...Kind of a double standard.