She is so calm and obviously peaceful that the police cuff her hands in front of her, and casually ask her if she has anything dangerous in her possession like "a knife, a gun or a bazooka". The tone of his voice indicates he is not the least bit concerned about any safety issue.
The school lock down was just a silly action by a school administration drunk on power and wrapped up in ridiculous procedures. The school officials know the student, and knew her act of protest was no risk at all to the rest of the students.
This all goes back to the conditioning of teachers and administrators with “zero tolerance”. Now they are afraid to stand up to the idiots who made these insane rules.
I am surprised student are not suffering PTSD from such lock downs.