... I've got a feeling that you're ignoring my posts.
In any case!
Whether an act is racist has nothing to do with the intent of the person in question. If you say, "I don't mean to be racist, but I think black people are lazy and expect government handouts," it doesn't matter that you prefaced your assertion with, "I don't mean to be racist"; you were still racist. If you call someone a "coon", it doesn't matter if you say, "I didn't know coon was racist; I just thought it was a generic insult"; it's still racist. If you wanted to dress up as your favorite black character, and you wore blackface in order to do it, you still did something racist. It is less bad than if you had done it in order to mock that character (or black people generally), but it is still racist.
I think the issue here is that many [white] people are told, "That thing you just did was racist," and they hear, "You are A Racist." It's not viewed as a commentary on their actions, and as something they can stop doing, but as someone attempting to label them Capital-R Racist, which results in this desperate, hysterical attempt to find some way to argue that what they did wasn't really racism. It makes these arguments an incredibly tedious argument of the informed having to struggle to educate the clueless on the most basic 101 elements of the discussion, and I wish that weren't the case.