He and his boy were walking in the middle of the street. A cop comes along and tells them to get out of the middle of the street. He says that they told the cop that they were almost to their destination, and they were not holding up traffic or anything.
I'm betting that they did not very respectfully and politely speak to the officer, as he insinuates that they did.
The cop threw his door open and it bounced off of one of them and then back into the officer, who then reached through the window and grabbed his buddy by the throat. I'm assuming that the officer was still seated, at this point. Now, that might be a false assumption, but it is not an illogical one.
How long are the cops arms, that he can reach through a car door window and grab the kid by the throat? Unless maybe the kid was bent over, with his head in the window?
The bottom line is that I don't know what happened. But I do know that this kid's story doesn't sound kosher, hence my comment.