It's not me but my dad who had this happen. I'll try to avoid drip-feeding so please excuse the wall-o-text.
He was at a family event with his partner of 15 years (all her relatives) and there were lots of children there. Dad was sitting on the sofa, talking with the adults, and one of the children (aged about 9) pushed passed his crossed legs to get passed. What she didn't know at the time is that dad had an wound on his foot, and doing that was not just rude but very painful for him.
Dad calmly explained to her that she had hurt him, and that next time she should say "excuse me" and he will let her past. There was no where else to sit, and no other way for him to allow her a faster route to her parents. There was, however, the option for her to take a longer route by going around the other side of the group.
Her parents were part of the group he was sitting with, and saw all of this, but did nothing.
A couple of minutes later, she shoved past dad again, hurting him considerably. She laughed at this. He told her not to walk past him again and to take the long route. Her parents did nothing.
She then shoved past him a third time, reopening the wound on his foot and destroying what was left of his patience. Dad snapped at her that she had badly hurt him and told her off.
Her parents flew into a rage and demanded that he apologise for speaking to their daughter like that. Dad apologised to keep the peace for his partners sake, because her family is important to her and he didn't want to make her feel uncomfortable on his account, but he is very angry about the way the parents acted.
Who was in the wrong?