At this very moment, that which is cited below is mine. :-)
LI Teacher Faces Backlash Over Facebook Post Calling Students ‘Racist’
Here's another one...kinda sorta:
Supporters Rally Behind Haverhill Man Under Fire For Trump Lawn Signs
Meh. I'm not overly impressed with this "anti-PC" movement that praises "telling it like it is", except when it happens that people are being racist, sexist, etc.
Still, while the Trump supporting kids quite likely are racist, that was a pretty dumb move by the teacher.
A few years ago there was a guy who pretended to be an atheist in order to paint how horrible and immoral atheists are (in his eyes). The pretense was not very good, like most haters he did not understand much about the people he hated (eg: "Why shouldn't I eat babies? morality is just a myth!"). So his past posts were examined and it turned out he was a priest in Florida. Confronted with this he withdrew and was not heard from again (that we know of). I am not sure he felt ashamed over his failed ploy, but I can hope.