"Frankly, the kid was brain dead before the police shot him."
You have just described all too many students in the Sheeple's Republic of FloriDUH.
A teacher friend of mine, when I asked him about his students, replied "You talking about those things masquerading as humans who take up space in my classroom?"
He is one of the more talented, no - make that gifted, teachers I have met. But, with no consequences for asocial behavior, all too many students are doing a good job of impersonating "brute beasts of the field".
That's a real shame. IMO, the left sold out our children decades ago, yet they're still in charge of the education system. Your friend has my sympathy.