@Lustig Andrei,
I think this
kind of role playing could be beneficial for everyone -- the public and the police.
I've made Mo watch the old ACLU videos about how to handle yourself in a police stop or interrogation and I occasionally quiz him on it to make sure he remembers what he's learned. I think if all kids had to watch such videos, and have these types of conversations, that fewer people would get hurt.
It's time to bring back civics classes where kids are taught about their Constitutional rights!
I'd be fine if his class a lesson like the one in this school if they asked questions like "How do you think this happened?", "What could have been done differently?", "What might have changed the outcome?", etc.