I was fortunate in that I went to college much later in life, after a career in the military, and as I'd had enough bullshit there, I made the conscious choice not to tolerate any out in the world.
Long story short, he and I butt heads. Then he wanted to take up to the Department head. For someone with a Ph.D., she definitely didn't think it through, just proving you can have a Ph.D., even in a STEM field, and not be too fucking bright... but... when it got to the Dean of Students, and the campus's VA liaison all sat down for a meeting with me, and I started pointing out that F.I.R.E. would have a field day with this, and would we really want a veteran-led incident on campus with a lab director that's flat out admitted in recorded interviews (I was attending college in a one-party recording state, so I had recordings of every one of these meetings) that he doesn't care about students' First Amendment rights??
That put everything into perspective really damn quick. I have never forgot that meeting because there, in that moment, we all looked at each other and everyone understood exactly what I was saying. The Dean of Students stood up and said, "Do you want to apologize to the department dean...?" and I just raised one eyebrow and he immediately shot back, "Right... we should probably all let this go." I nodded and said, "I think that'd be the best option for everyone involved, after you guys sit down with Lab Director and straighten him out."
I've done some things I'm not too particularly proud of in my life, but this was one time I really felt like I did the right thing.