Literally everyone knows you did nothing wrong. Anyone denying it is a shitty parent who lets their kids snatch and hit other kids and wants the world to parent their children and revolve around their children.
And they're hoping that soft, weak parents will be idiotic enough to allow their own children to be bullied, hit and have toys taken away from under the auspices of "be kind".
I used to work in a school, long time ago, and I saw kids who couldn't/wouldn't play well and their attempts to force other kids to let them away with it a lot.
What ended up happening time after time is that the other kids started sneakily hitting, pushing and excluding the badly behaved child. They'd run off at the start of break and hide or pretend not to hear them, shove them and run away - it's just human nature. My solution was to try to take the badly behaved kid to do another activity , spend some time one to one with them when I could, because no way was I forcing kids to drop their boundaries and force them to be around kids they didn't like who couldn't or wouldn't do the right thing.
Kids have a right to boundaries and they will enforce them any way they can if another kid is badly behaved.
And again it just doesn't matter about the "reasons". Even where there are good reasons. Nobody has the right to expect anyone to be their punchbag, no matter what age.
In fact, it's at that age we start to learn that behaving like that means exclusion. And if a kid can't/won't learn that, they have a sad and sorry life ahead of them.
So if you're in the "but my child is allowed to be have badly because (excuse of the day) what will actually happen is that other children will start bashing, ignoring and excluding your child, and they won't give a shit about the excuse making.
And never forget that apples don't fall far from trees. If a child is behaving like a pain in the arse, it's often the mothers and fathers who are teaching that. No diagnosis required.
Well done idiotic parents who refuse to understand that the world doesn't revolve around your kid, no matter what challenges they may have.
Whine all you like, reality doesn't care how you feel.