The teacher said a VERY important thing near the end (@ 3 min)...he said...
"It is our duty.. to speak up for others when they cannot."
He was telling the students they had a "DUTY" to speak for their classmate, yet the classmate did not advocate for herself. She was not unable to do so. She was not gagged or dragged away. She chose to obey the unjust command and got up and left. She did not speak and defend her RIGHT to be there, she did not even ask why. So, why is it someone else's duty to do it for her??
As he said>
It is our duty to speak up for others>
>>> 'when they cannot.'
It is NOT our duty to interfere in someone else's free will to obey an arbitrary unjust command.
This is why we all just giggle when we see a moron with a mask on.