I don't remember the details well - it was mentioned in one report and never again. As far as I recall, a little black boy hit a white girl, apparently without cause or provocation - I got the impression that both kids were young, preschool. The little girl then ran inside and spoke to her father, who got upset; he went to talk to the boy's mother, who immediately became aggressive. Already upset, the man became aggressive too, and it snowballed from there. The restaurant's cameras only cover the inside of the building, not the play area. There were apparently witnesses, both other kids and adults, who saw the whole thing unfold. When the incident was initially reported, one of the adult witnesses tried to explain what happened in comments under news articles, but our noble Fourth Estate never bothered to follow up on that side of the story.