I'd recommend discussing your concerns that class is the biggest divider, without mentioning that you're frustrated that race has a highlight on it currently. Otherwise you can come off like "men's rights activists" do, when they appear more concerned with how people are paying attention to women's issues than men's issues. Both are important. All accounts of classism, racism, and sexism are important. They may not be equally important, but I think we can address that later, personally.

Only saying this because I agree with a lot of what you're saying, and I don't want the frustration to distract you or others from the main point. You're totally right that there are some things that some communities/movements just don't want to hear.