I didn't say I need a list.   I said a list would be interesting.
As for the rest of your post, I can be acting very very nice and still have someone else offended by what I said if I said a word that I didn't know was wrong.    
An example I gave earlier was when stoked told a story about how a black man saw racism in stoked body language and confronted him about it.   Stoked had literally no idea that the way he was standing/moving was projecting racism at the man.   How do you avoid that?
A guy at my work mentioned how he would like fried chicken for a potluck/company party and there was a black man present.   It got awkward.   If the black man was easily offended and was looking for something that wasn't there he could have easily made into a big race thing since fried chicken is a stereotype for black people.    Those are just a couple of scenarios/examples.   There are more.
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