Let me start by saying that I am a liberal man who believes in equal rights for all, was raised primarily by women (my mother and a couple of very dedicated aunts) due to almost total absence of my father, and have lived my whole life in a progressive place (SF Bay Area), and fraternize with progressive people. Women have long been my heroes.
It is from that perspective that I say to you now, that while generalizations are ridiculous, and certainly there are all sorts of people in the world, including any myriad of Feminists, with many degrees of dedication and various philosophies in-between; the number of cliche spouting, angst-ridden, men-hating, frothing-at-the-mouth ball busters I have had to deal with has far exceeded my fair share.
Sorry, much as I would like to be the first in line to refute any and all stereotypes, I know three women who I could put you in a room with, and an hour later you would walk away half-convinced that every law, every school of thought devised by a male, every work of art, movie, popular song, television show, book and word uttered over the past twenty centuries was a direct attack against the sanctity of the Holy Vagina and a declaration of eternal slavery for every woman, everywhere for all time, and that the world would be better off if all sperm were frozen and all men subsequently eliminated. And I can tell you about the time they weren't even worried about the niceties of excluding present company (me!).
It's wrong of people in public discourse to perpetuate the myth that all Feminists are like this. But even as a liberal man in a liberal place, I have to be honest and tell you straight off that I know people who are exactly like this, and they are frequent enough to be encountered. I understand they are just over-passionate people, who like any obsessed nerd (because they all are nerds in my experience - I am too!) can go too far when expounding upon their favorite topic and can find themselves very upset over grudges held years after whatever sleight created their unhappiness. But as with the one fat gamer who stinks up the table and created the stereotype the rest of us now have to live down, so too does the existence of a few ball busters create a stereotype that Feminists must live down. It's just what happens when public discourse is interrupted by a militant-minded person.
My advice? As with all of us, present a better face for your cause than the loudmouths who share it with you, and try to remain more active and higher profile than they.