Sadly, I'm also familiar with the idiocy parents are capable of, and also sadly, with Harrisburg, PA, which seems filled with more than its share of idiots (it being the capital of Pennsylvania and thus filled with politicians as well as cranky parents).
The whole article is bizarre: "The biggest melee broke out in April, when an uninvited adult disrupted a child's birthday party. Seven officers arrived and found as many as 40 people knocking over chairs and yelling in front of the restaurant's music stage, where a robotic singing chicken and the chain's namesake mouse perform." "He thought there weren't enough places where young people could play (video) games in a family atmosphere, according to a company history." "The company stationed armed security guards inside the restaurant in an effort to make it safer."
If it had been dated April 1 I would have laughed.
W.S.J.: 'The environment also brings out what security experts call the "mama-bear instinct." A Chuck E. Cheese's can take on some of the dynamics of the animal kingdom, where beasts rush to protect their young when they sense a threat.'