I got kicked out of a raid because of my ethnicity. Although I have found pretty cool people on this forums from all genders and countries; I got to say wasn't expecting that. Personally I would never kick and downright make someone feel like the group did to me and my buddy.
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There's a lot of really unhappy people in this community looking for a reason to take their misery out on others. Just do what I do: Bail at the first sign of any negativity. There's always the next group. Block them on PSN or XBL and forget about it.