When a cop tells you to do something, you do it. That’s how it works. This guy was leaving in handcuffs either way, he just chose to stand up for himself and he got tazered and his window broken. This behavior is WRONG by the police in my book, but again just do what he says.. Until we focus on changing our broken system you have to play by their rules.
Unless of course you want to make a statement like this guy, fight on brother! Maybe one day when enough of these videos surface the police will have to use common sense (something they seem to lack here) instead of following orders blindly, and can't play the part of the bully when force is NOT necessary.
I would hate to be that police officers kid, imagine if you questioned him? You'd probably get a punched in the face