Directly from your first post in the linked thread...
So are you a liar, or an asshole?
Either way, your preception of civility and responsibility is, for lack of a better term, squed...
No matter who hits who, a police officer, a teenager, a 90yr old man, or a 7yr old on a big wheel (those are ftw btw), YOU FUCKIN STOP. Your "friend" is fucking human trash for not stopping. The cop, fucking trash. Im not a violent man, but God(or some higer power) help them if they ever do that shit to someone I know, or that i witness, or me, because i will run them down like the fucking scum they are, and use the fullest extent of my knowledge to restrain them in the most painfull way i know how untill the cops show up.