Why "men's rights" as opposed to "equal rights," for instance?

If you consider "white power" groups dangerous or racist (and maybe you don't), why isn't "male power" similarly situated or antagonistic?

I understand that some (I won't say many, necessarily) of the people here really oppose modern feminism. But if their approach is wrong-headed, why respond with the same approach from the other direction? Do two wrongs make a right in this case?

Thanks for answering!

EDIT: More broadly "why is men's rights necessary (as opposed to equal rights)?"