This is close to what I was trying to say in my snotty liberals post. I've had people similar to your friend treat me like crap, shout me down, or ostracize me because I, out of ignorance, didn't phrase something the way they liked. I understand that life is tough for people who fall outside of what society perceives as normal or for denigrated minorities. I understand as a person of this description myself. But I'm not going to stick my nose up at someone who asks me a genuine question about, say, my Hispanic heritage or accidentally calls me Mexican rather than Hispanic, or even makes a joke IF I know that person has the well-being of Hispanic people at heart and takes it to the voting both. Why? Because if I make an enemy out of this person who clearly means me no harm, I might actually end up putting more power into the hands of people who do mean me and people like me harm. Duh.

I'm still trying to figure out what cis-normal is.

If you were talking about an older person, I would suggest that these can be early signs of dementia. But since you seem to be describing a young adult it’s probably developmental. This sounds like a somewhat late arrival to the “no one understands me, I hate the whole world” phase that many of us went through as teenagers. Most people grow out of it - some people don’t. It is often related to having a very black-and-white view of the world.
When opportunities present, you might talk about the difference between people who don’t understand, and people who actively want to oppress you. Otherwise, you might have to just hope that they haven’t alienated too many people by the time they learn to see more gray in the world.

It's really hard when politics and social differences come between you and friends or family. I've found that there are some people in my life that I just lose respect for. Certain topics you can agree to disagree on, but others reveal a mindset that you can't be impartial about.

Sounds like friend...could be in a learning curve...major anxiety and stress! And, from their history, may not do stress, well! If you want to maintain relationship, you may need to stop any monitoring of this person, and should he need your help and advice, let him ask for it! This person could progress in a totally different direction than other people that you know! It is not always easy to predict how a person will evolve (even in one's own family).

allies are all we have

There is little anyone can do about another person although it does no harm and cost nothing to try.

Sounds like this is a relatively young person? Still going to college? At what level; graduate?, undergrad?, or...? Anyway, at some point, he or she will, hopefully, get over it, and perhaps then you can resume the friendship. If not, suck it up and move on, life's too short.

I actually have had friends who became toxic to me and I've had to cut off the relationship because I got swept up in their depression and judgemental behavior. Had to cut a very negative friend off for 3 years. Take a break when I need it.

You have been very vague about the details. He/she sounds rather young and the young are notorious for taking up causes and dedicating their lives to it to the point of unreason.

You have stated your position on the matter so all you can do now is wait. The ball is in his/her court and when the time is right they will come back with questions. If this person is important to you then you will need to have patience. Good luck.

<3

move on

Humans are complex beasts...