This is the Facebook page for the group of which the kid who got punched belongs to. I don't Facebook, so I was limited on what I could actually view on it, maybe others will have better luck.
They call their group "Denton Left," an amalgamation of communists, socialists, anarchists...basically the worst parts of society. Laughable that these people who want to defund the police, start riots, etc. are Johnny on the spot in calling the police when something happens to them. LOL
https://www.facebook.com/DentonLeft/