Isn't it in the objective + material self-interest of all workers--including white + male + American ones--to abolish racism, sexism, imperialism, etc.?
For instance, you don't think that it is in the self-interest of American male workers to be poverty-drafted into the US military, do you?
Or maybe you are using the term 'self interest' not in the collective + objective sense but in the individualized + subjective meaning?
Yoshie