What is the best, or your favorite, way of handling a troll, racist, or all-around bigot...?

I think you're spot on about ignoring them. Unfortunately I am an overly pionate bleeding heart with a huge mouth, It still gets to me that people are still acting this way. I grew up in Southern California, where, if you did not accept every culture, you were in serious trouble. I thought it was great, and an opportunity to experience diversity in all its form. Then I had to move to the South. I learned Hate there, and it truly darkened my soul. Ever since I was able to leave, The slightest things said in a hateful racist bigot manner have me on edge. The problem is that the trolls are looking for a reaction just like mine to feed off of. Goodness knows my own persona will cause me to have a nervous breakdown by the time I hit 30. Thanks for the question. I look forward to seeing how others handle this behavior so that I may adopt the same sort of acceptance. ;-)