I have only heard one side of this, so perfectly prepared to be told IABU here.
I was talking to an acquaintance recently whose DD is 5. The mother told me proudly that a boy in her DD's class had tried to hug her and she didn't want him to, so her DD "threw him to the ground and gave him a big kick in the goolies". Apparently the boy in question burst into tears and wrote her DD a letter saying sorry. She is immensely proud of her DD's feistiness and told her daughter "you go, girl - it served him right'.
I know it's important to teach children that it's OK to say no to unwanted attention, but I'm inclined to think that it would have been extremely different if the genders had been reversed - "a girl came up to my son and tried to hug him, so he threw her to the ground and gave her a good kicking until she cried."
Lots of 5 year olds are still indiscriminately huggy and a simple 'no, I don't like that' should be enough - I don't feel violence is something that ought to be praised.
AIBU?