You do know, when it comes to games like "Call Of Duty" these kids shouldn't be on these servers to begin with. If I'm playing a game aimed at a fairly mature, or at least teenage audience, I am not going to conduct myself with the level of decorum that would be appropriate for 8 year olds being around because there aren't supposed to be any around.
What's more if your concerned about "bullying", understand that while I mostly play MMOs, when I run into a young child that shouldn't be in the game (of any sort) I have been a part of efforts to drive them off, because to be honest in a T or M rated game he shouldn't be there to begin with and his continued prescence creates all kinds of problems, one of which is having to be concerned with their prescence and having to walk on eggshells.
To be honest I'm not sure if the community using bullying to chase kids out of a community that shouldn't be there to begin with is a bad thing. That's a form of policing that probably should have already taken place with the parents saying "no" when their little kid wanted the T or M rated game.
Understand gaming is intended to be something where you can put your hair down and relax. A lot of the foul language and uncouth, and un-politically correct behavior is part of that. People who have to play the role of being nice, entirely tolerant, and polite all day at work or at school in the face of a lot of jerks (obnoxious customers, etc...) want to let their hair down and let off some steam. The kind of language and venting (which is just that as opposed to heartfelt racism in many cases) that you see is typical of sitting around with the guys or hanging out in a bar where your known. It's nothing unusual for adults, or even teenagers who we all know aren't exactly the most polite people in the world when they are off on their own kicking back. You don't let 8 year olds wander around unattended in bars or teenage coffee houses for a reason, and that reason isn't just to protect them from human predators or fear that they are going to saunter up to the bar and bite the neck off a bottle of JD like a bad cowboy movie and start guzzling. You let your kid into CoD, or WoW, that's just like letting them hang out in a bar populated by off duty longshoremen (or really anyone), your going to hear crap that doesn't fly in polite society because the entire point is that they are not supposed to be in polite society. When I play a game that isn't suitable for little kids, I do not want to have to act like I would if I was walking around an elementary school.
In short, while many people might disagree with me, I think this is more or less a non-issue. Kids of the age being discussed aren't supposed to be playing anything above the "E" level for a reason, and parents who don't respect tht have no right to complain. What happens to their kid is on them, not the community, or the service providers.
As far as those shocked by the stupidity of parents, understand that this point also isn't really "stupid". It's called "rabble rousing" it's actually very intelligent because the points are being made to incite attention FROM stupid people, knowing that simply because a kid is involved the ignorant are going to rally, which gives the people involved five minutes of fame... and also promotes the "experts" who want to get their books out there to the intended audience. Basically the people who are dumb enough to not understand this are the target, but wouldn't themselves be able to bring this to anyone's attention. Like it or not there are people out there who will embrace anything that tells them their failings as a parent (or anything else) are not their fault, and buy products like books that will tell them what they want to hear.