The End of Childhood Innocence?

Ok, so I rarely go off on philosophical tangents, but I feel strongly about this. With all the wars, killing, back-stabbing, going on in real life, do we really need children's tv, games, and conversations to center around this too? I for one, do not want my daughters hearing about killing and violence, when they don't even understand the finality of that word. Or thinking that fighting is fun. Or learning how to call their friend's names that hurt from a yellow, bucktoothed, sponge! I'm putting my foot down. Because I live where I do and I have had the opportunities that I have had, my children have the opportunity to have an extended childhood full of innocence and safety. Children in Iraq, Africa, India, etc...begin to lose their innocence at birth because of war, famine, natural disasters, to name a few. If I can protect my kids and kids around me from that until they are old enough to understand these things a bit better, then I'm going to try! Please help. Don't encourage kids to play or watch shows with unnecessary fighting or violence. Don't buy them games that perpetuate these things. Fight for their innocence for as long as you can. Don't give in. If we don't fight for them, who will?