At the playground with my kids.
There were two boys in the sandpit next to us. One was about 6 and the other under 2.
The 6 year old threw sand in the 2 year olds eyes and then grabbed his hair and pulled his face into the sand.
My reaction was to scream for the 6 year old to stop. Basically loudly I said. Stop! What are you doing, this is so dangerous.
I looked around and the mother was behind us on the park bench with her baby.
She calmly said.. don't do that to you brother sweetheart. And that's it!
My friend said I was being unreasonable to interfere but she didn't see what happened as she was facing the other way and my reaction was an instinct.
So, AIBU? I am willing to accept that I am but the way he pulled his hair and pushed him down and the expression on his face keeps coming up in my mind.