Interestingly enough, they are not all bad.
Example, my most recent gf (now ex) has a Ph.D in Criminology, and while teaching courses and publishing articles in that field, also teaches Gender Studies courses.
And she is not like some of the more extreme SJW-type feminists I've encountered on Reddit and the internet in general. Though these progressive extremists do exist, online and IRL.
I do still think it is crucial to at least attempt to differentiate between the types of feminists out there who are Stalinist in their tactics - actively seeking to censor and ban ANY discussion of anything which questions their strict interpretation of feminist ideology (often the kind you find on the internet, and some of the most vocal ones at schools), and from the types of feminists who are serious, yet rational and open to discussion.
However, those who are open to discussion are seemingly a minority now - or at least aren't as vocal.
It is 100% true that a large number of feminists do attempt to shut down critical debate, citing justifications like "oppression" and "hate speech" and "safe spaces" in order to stamp out any discussion of views they do not agree with.
Quite literally, the ONLY subreddit I've ever been banned from - and for which I was not given any explanation afterwards, was
/r/Askfeminists.
I was visiting the sub frequently, and often making comments, questioning things like "enthusiastic consent," and the bizarre new feminists requirements to ask for verbal permission for every single escalation during a sexual encounter. (E.g. "may I kiss you? may I touch your hair? may I undo your shirt? may I take off your bra? could you touch my penis? may I lick your vulva?").
At
/r/Askfeminists
I also would question the censorious nature of certain feminists in ways that I had experienced first hand at University. For example, a Men's Rights group at my school attempted to bring in a female English professor who was a former feminist, but who now critiqued the ideology because she disagreed with the notion that it equally supported men, and who was upset with feminist censoring of discussion.
A vocal group of feminists at the school actively attempted to ban her from speaking, on the pretense that since she was invited by a men's rights group, she MUST therefore be propagating hate speech against women. Even though they had not even heard her speak.
When this particular feminist group was unable to ban her from speaking through the normal channels, they actually then attempted to have the Men's Rights group at university deratified, attempting to dissolve the entire organization, so their guest speaker wouldn't be to speak at their event, as the group would no longer exist.
Luckily they failed in this attempt, and the discussion went on, though feminists heavily protested it. I attended it, and despite the frequent jeering and interruptions from the crowd, the Prof was able to deliver her speech.
Unfortunately, at another Ontario school (University of Ottawa), when the same Prof attempted to speak, a group of feminists were successful in literally drowning out her speech as soon as she started speaking (
http://www.youtube.com/watch?v=rOnuZsXRwTA&t=29m25s)
But even worse was the experience of Warren Farrell when he attempted to give a similar speech at the University of Ottawa. Feminist protestors literally blocked the doors to the event, and abusively harassed those who sought to attend. PLEASE watch this entire 4 minute video of the protests. It is absolutely disgusting.
https://www.youtube.com/watch?v=iARHCxAMAO0
Even still, there are feminists who are not this extreme in their totalitarian tactics. My ex-gf, for instance, actually has a Ph.D in Criminology, and teaches criminology and gender studies courses. I've talked to her about MANY of these issues, and she does not agree with these censorious tactics. She is brilliant and rational, and open to discussion. I've even attended feminist talks with her.
Her take on the situation is that these "Internet Feminists," and those that seek to ban speech at schools, are actually a highly vocal, yet more extremist group which does not necessarily represent all feminists. And that if I want to learn more about feminism, that I should talk to people like her, and read scholarly works on the subject - and not get my info from radical internet activists.
So I hold out hope that there are still a large number of feminists out there who are anti-totalitarian regarding discussion and free speech.
Though it is hard to maintain this open-minded view sometimes.