Not in my Facebook yard
I defriended a "friend" on Facebook today, the first time I've done that. And to be clear, this person was someone I went to school with and got along with, but was never close to; I think we might have gone for burritos once or twice, but that was the extent of the relationship. But I'd always thought of this person as a fairly intelligent, nice person. Well, they posted some remarks to their Facebook page that I found insulting and derogatory towards Indians (which I happen to be). My first knee-jerk reaction was to respond and point out the error of their ways. But then I thought, what's the point? He posted such a comment knowing that I was his friend and he probably has other Indians as friends and it didn't seem to bother him or filter his remarks. So I defriended him without a word.
I know ignorant people are plentiful in this world, especially online where they are not aware of the impact of their words; I learned that through the fanfic world. However, as much as one expects and to an extent, tolerates, such comments from relatively anonymous, non-flesh, non-RL contact people, it's hard to take from someone you considered a friend or acquaintance. In fact, I was so startled that I read his comments several times before I realized he was serious and not joking at all. I figure he can continue to share his ignorant opinions on Facebook; I'm just not going to read them myself. And at least, now I know where he stands so I can effectively write him off for the future.