Wealth inequality and the class struggle are the defining problems of our generation, and all this nonsense about who is more underprivileged than whom is merely a concerted attempt to obfuscate that.
If you can't at least try to see issues from other people's perspectives, then that's your main problem.
I would even stand behind the notion that wealth inequality affects literally everyone, both the haves and the have-nots, while the other issues affect a minority, by definition.
I would also argue that it is perhaps advantageous to those minorities to rally behind the unifying cause of wealth inequality in order to maximize their political impact simply because if they focus on minority issues, their voice is diluted among the concerns of the overwhelming majority (which, in this particular case, is still white, in the US).