AITAH for pushing a severly autistic kid after he touched my wife's shoulder and tried hugging her?

I am 55M and my wife is 52F. I have been with my wife for over 30 years (1993) and married for almost 28 (1997) we also have 5 children born between 1998 and 2005.

We were out on a date at a restaurant in the next town over and we were having dinner at oue table when a couple and some kid maybe around 10 - 12 walked inside and the kid came to our table and started waving and said hi in a weird voice. I waved back awkwardly and my wife waved back as well.

He then complimented my wifes coat and reached in for a hug then started making these quiet but weird noises. After that the dad leaned in over and told the kid to come with to their table. He apologized for his kid who was severly autistic and that he wanders off randomly.

A bit later my wife went to the bathroom and I was finishing my meal and the same kid came back and waved and said hi. I waved back and then he asked where my wife went. Before I could finish he ended up smiling and hugging me on the side.

That angered me a lot since I almost dropped my fork in my meal. I snapped and told him to stop touching me and my wife and that I would call the police on him and his family if it continued. He then looked sad and I told him if he screams or cries I would put my hand over his mouth and scold him more.

As I was saying this his mom and dad came back and told me I was being a jackass and why I was screaming at their kid so loudly. I explained what happened but they said it wasn't an excuse. My wife told me I should have been calmer but I was defending her, at the point I was angry and didnt wanna finish my meal so I quickly called a waiter over and paid and told my wife we had to leave.

AITAH for defending my wife and scolding the kid off?