Represent: "entitled to speak or act for" or "amount to". So no, White people are not entitled to talk or act for an entire nation which does not amount to only white people. (and I say this as an older white male.) "Do not represent" does not equal "not allowed to take part in". And, in my opinion, White males in the US complaining of being marginalized is the equivalent of a spoiled brat, upon being told that they should share their toys, wailing "But that's not fair!.