Am I at the DP?
For arguments sake, even if the first ten minutes were edited to hide something, what do you imagine he could have possibly done to warrant an assault like that? I mean really, he got glass in the face. His eyes were covered but his mouth could have been open.
They had him pulled over at secondary, he wasn't going anywhere. If they wanted him out of the vehicle so much, why not chock the tires? he would have to come out sooner or later.
I see no reason for this behavior at all on the part of the border agents. It was a criminal act.