Let's not use jihad as an example, since it doesn't have anything to do with the students for whom you've used a "derogatory term" (your words) to denigrate them for what they believe. Which sounds pretty much like what you say they did to you. Except - in your case, apparently you were defined as "the one who's against abortion," which certainly isn't derogatory in any way - and yet you freely used a derogatory term to in turn define them by their beliefs. So when you said that your "'unorthodox' viewpoint has become what they define me by," did you realize you were doing the very same to them, defining students with their own beliefs as SJWs who were "infesting" a campus that they have every right to share with you without sharing your beliefs?
Jihad was chosen as a more extreme example, but it was an example nonetheless of why I think it's okay for some people to experience marginalisation for their beliefs. Unless you think we should embrace those who support jihad, a proposition I find it unlikely you believe. I think derogatory was probably not the best word for me to use as it's too strong to express what I meant. Pejorative is a more accurate term, and indeed the term 'SJW' is a pejorative term. I don't consider being defined as "the one who's against abortion" to be derogatory, but those who define me in such a way do. I'm not defining SJWs by their unorthodox views, on the contrary. Their views are very orthodox on my university campus. It's those with traditional, conservative views who are considered to be unorthodox. Indeed, all of my fellow students have every right to share the campus without sharing my beliefs, I don't disagree with that. It just so happens that the ones with those beliefs hold all the positions of power and influence over fellow students. The categorise people like myself as racists, homophobes, sexists, misogynists, rape apologists, ableists, transphobes.. the list goes on. If I was to dare to venture an opinion in a student union discussion (something I'm reluctant to do), I'll be told in no uncertain terms that because I'm a straight, white, cisgendered male that my opinion doesn't count. My opinion is meaningless and I should "check my privilege". If I told a lesbian, ethnic minority, "genderfluid" that their opinion doesn't count because of those characteristics, what do you think would happen to me? Telling me that because I'm a straight, white male that my opinion is meaningless is a gross example of reverse racism and sexism.
Kind of like you did to them in your OP?
I don't hate those with differing viewpoints to myself, but they do hate people like me. I can happily be friendly towards a militantly left SJW, but they would never extend the same courtesy towards myself.
I think it's a more a matter of perception. My university is a state university in a liberal state. Universities have always been hotbeds of new ideas, revolutionary ideas (and that's not necessarily a scary word to use), innovation, invention, enthusiasm, optimism. You said yourself that you'd been treated fairly by your professors, right? That's a good thing to be able to say. I'm not saying there aren't radical professors or radical students, but it sounds to me like you have the freedom to express yourself.
I have the freedom to express myself academically, I do not have the freedom to express myself out of the classroom. There have been cases of conservative students even being banned from university bars and restaurants by the student union for daring to express an opinion which differs from the militantly left orthodoxy they subscribe to.
