Is Michael Richards a racist actor?

(Only a few people agreed with me, in a similar topic about Mark hamil being racist Iirc, I so I figured I'd ask this)

Because recently, he was unexpectedly asked questions while being filmed when leaving some place.

And this one person asks, what do you think of changing the 20 dollar bill to harriet tubman. Is it a good idea? But he didn't say he was for this change. 

Then they asked, 'what's the white man got to be mad about?' But he didn't answer that question either. I'm saying is he probably racist, just based on this one event. Not anything else he did previously.

I gotta find this footage though. Of what I' m talking about. Otherwise somebody here might tell me I'm making all this up.

If I remember correctly, he had a weird way of not answering the question.s.   Like, he said something weird.