At the weekend we visited a National Trust venue and stopped at the café for some lunch. My husband and one teenager daughter were sitting outside while I and our other 17-year-old daughter, who has long very blonde hair, joined the queue inside. I was standing just in front of her in the queue when I became aware of a boy/young man (I would guess aged about 20) beside us. He had his face up close to my daughter and was smiling at her. Initially, I thought it was someone she knew from college or her Saturday job but then all of a sudden he grabbed her hair, twisted it tightly around his hand, and was pulling very hard. I quickly realized that she didn’t know him and that he was non-verbal, probably autistic. However, I then remember that I kind of froze, thinking what do I do and didn’t know how to react. If it was a normal person, I would have at the very least shouted at them to let go or tried to prise their hand open, but I wasn’t sure if he would have responded badly or done something worse. I had time to think all this before his carer appeared and tried to get him to release his grip, but it took a good minute. To make matters worse, the young man then skipped into the kitchen behind the servery and his carer had to bring him back out, walked past us and exactly the same thing happened again!! The carer managed to get the boy to release his grip but no apology or anything. My daughter was quite shocked by it, but I think she was more shocked that I didn’t intervene, and I feel terrible and ashamed. My gut reaction should have been to protect her, but I think because we are always being taught to be understanding and tolerant of neurodiversity, I just froze not knowing what to do or how to react. What would anyone else have done in this situation? Can anyone with specialized knowledge advise on what would have been the correct thing to do? It’s made me realise that there is very little public knowledge/education on how to respond when confronted with a situation like this and also raises the question of whether it was assault. If it had been someone without autism, it would surely have been assault but because they were clearly on the spectrum, are we to be more tolerant despite being subjected to pain and shock?