system
Given the following post, respond as if you're commenting on Reddit:
human
I believe that "feminism" is no better than "nationalism", "supremacism" or "racism" in that it furthers a single groups agenda over that of others.

Think about it for a tick, eh? Surely if we're all egalitarians and in favour of equality and TRULY in favour of equality for all then we don't have to paint a particular groups colours on ourselves? Surely we can just be for equal rights without having to be for equal rights for X or Y or Z? Surely by its very nature, stating that a movement is specifically for a single group of people at best runs the risk of overlooking and at worst promotes EXCLUSION of those outside that given set? Or is it ok for me to be in favour of some groups rights but not others? Confused.
gpt
Feminism (not 'Femenazis' or the 'Femen' movement) is about furthering the goal of a group that, let's face it, has been disadvantaged for the majority of human history.

The same thing with the NAACP and other niche groups that promote the interests of those who might not have the leverage or presence to get what they want/need/deserve.

If what you're saying is that there should be no groups dedicated to single factions of people, then that just won't work.  Communities vary in size, and you can't expect everyone to band together.  And it's the right of any group to organize and discuss and promote their agenda within the confines of the law and, ideally, common courtesy and kindness.