Not quite correct. In your scenario, the teacher would have gone to German students and told them they must be grieving at the death of Adolf.
This teacher didn’t just not care if some terrorist sympathizer was distraught, he went to a student and assumed they had to be grieving because a terrorist was killed.
Granted, this story does not give all the details but if they are correct as given and there isn’t some smoking gun, the teacher’s conduct was unacceptable and stupid.
And my point is there isn't equal treatment for teachers who tow the liberal-diversity love fest line and often cross it with little or no consequences.
My grandfather served in WWII, in the Pacific because of the German surname.
I doubt my father would have appreciated being told “Adolf Hitler was killed, I bet you are grieving!”.
This teacher is a loon and too stupid to be put in charge of instructing children.