Sorry, but this is absolutely stupid. Do you know what will happen if "non-white" people avoid certain universities? They will become even more "non-white". How on Earth does that help? It doesn't help with representation. It doesn't help with awareness. All it might end up doing is assuring that racist people get to live in a "more white" environment.
Also, don't believe everything you read on the internet. Not every person at a certain university will be racist. Some "non-white" people who have been to the universities you've mentioned have experienced absolutely no racism.
Unfortunately, I can almost guarantee you that racism is possible at every university. There's no point in avoiding a university just because you've heard that there has been racism.