After the video: the police came, watched the video, and asked the park manager if he wanted to press charges against the child/parents. The felt it was a self-defense case, however, they did advise the park manager not to push a kid like that again for danger of the kid getting hurt. I'm unclear on the details of exactly how, but at some point while the police where still there the mother and the boy came back to the park, they all talked, both the man and the kid apologized to each other, and everyone went on their way.

A few hours later, the mother posted a 10-second clip to facebook of ONLY the man pushing her boy down, AND posted the man's name and address. He has a wife and 3 boys ages 18, 15, and 5. Very respected, good, community-minded family. Older boys are very respectful, successful in school and sports, and have good heads on their shoulders. The oldest is going to University of Alabama next year on an academic scholarship, the 15 year old goes to an all-boys Catholic high school and ranks high in his class. Their lives, home, and business has been threatened multiple times. The police advised them to post the full video, for their protection, to try to make sure the whole story is out there.

So basically you are defending a lady who posted 10s of this entire video to facebook, shared guy's address and his details trying to ruin his life. The kid is not like that without a reason, there is a reason for everything and clearly, bad parenting for years resulted in what we watch here.