I could talk for days about this, so to basically summarize my thoughts on it:
This isn't just an issue that comes up with feminism, this suspicion or hostility might be erroneously aimed at sympathizers and allies of any marginalized or otherwise oppressed group. It's not ideal. It's sometimes ironic. But understand that the majority of the people who would be antagonistic with you are extraordinarily passionate about the subject and have found few true sympathizers, and more often than true sympathizers you find people whose primary concern is clearing themselves of any charge and wanting everyone to acknowledge that
they are not contributing to the problems of sexism or racism, et cetera.
And while I believe wholeheartedly and have not the slightest shred of doubt that you are always on the right side of things, Nikolaj, as you are nothing if not a very good person, I can definitely see why more open social activists bristle at the nearly constant flow of people coming in to assure them that they are in no way responsible for their struggle (although, not infrequently, they have been unwittingly, or they benefit from the misfortune of the other group). So many people step forward wanting to correct more vocal activists for using generalizations. Few people step forward and say, "I understand why you're angry, and what can I do to help this cause?"
Like I said, it's not ideal, it's not perfect, but you're dealing with humans, after all, and with an intensely emotional subject. Let your actions speak louder than your words, and find the strength and confidence in yourself to know what you're about and to carry on with your values, even if you catch some undeserved aggression. You don't owe it to anyone to be kind when they're being hostile to you, of course, but at least do not take it personally. Anyone who gets to know you even as much as I have will recognize you as thoroughly kind, and I feel lucky you're on our side.
