Actually, nothing first-hand. I have not sat through it. But every review I have seen mentions it is a landmark film, and that it has racist overtones. I took it as a given, but as I have not seen it I will have to say it is second-hand info.
I've sat through it and nothing I can remember about it was overtly racist for its time. I haven't watched the film in years so I'm sure I'm forgetting much of it but now that you mention it I'm going to have to watch it again to see what this may or may not be about...