I used to go to Meebo.com. There were always a ton of haters, going to international rooms and bragging how they were better than anyone else, and that people from other countries just "sucked" and were not as good as Americans. These were always probably people who fit between the 12 and 25 year old range, and were pretty much the image of "ugly Americans".
I myself love going 3-D to IMVU.com. I have my own room, and have been fairly successful keeping out the haters. Our room has moderators or "mods" in the room most of the time. We have a set of rules we all follow, and everyone who comes in should know the number one rule is to be "polite". We will not tolerate any kind of racist statments, homophobic statements, or sexist statements. Those people will be quickly booted (out for 20 minutes) or banned (forever) if they can't behave themsleves. Our room is open to all languages. People who have a problem with that, are asked to leave as well.
Jess and I playing air hockeymy particular room is about Asian culture and music, so we don't cover religion or politics. But there are some political rooms, and many of them are well moderated as well. Rooms can handle up to ten people, though sometimes it may drift over a bit.
As for IMVU, its simple a program you can down load,activate and its free. You will be able to put your avatar into some clothing, and go off and explore on your own, rooms you would like to hang out in, or travel from room to room. There are a few haters, there but they don't last long in a room, if an owner or mod is there.