The knee grow expressed an interest in the kiss if you listen to the conversation, only then did the white dude lean in. Typical fucking Americans here talking about "sexual assault" by someone leaning in for a a kiss with your law suit culture and "what if he had a knife" .... not everyone is trying to hurt you.
Kid was most likely an idiot no doubt but can't justify punching him in that incident. Those types of videos are usually just about filming people reactions and can be funny sometimes.