My kid's meltdown looks like 'bad behavior' to observers

Full-body dysregulation meltdown in the grocery store. Strangers judge me. 'Why can't you control your child?' I'm not trying to control anything—I'm trying to help them regulate.

My kid is dysregulated. The world sees a discipline failure.

How do you protect your kid from public judgment during dysregulation? How do you handle it in the moment?