Agreed. If I were the person getting arrested at the end, my final instructions to my kids as I'm getting arrested would have been to close and lock the door behind me. I suspect the one kid pushed the videographer back because he was worried the cop would try to destroy the evidence. Set that video to upload somewhere and hide the cellphone.
At a certain point if someone in the house put a gun to that cops head and told him to get out, they would have been in the right.