I feel that you are terribly wrong in your findings, there is nothing wrong protecting your child from a bully child. If your child get offended by another child, comes a point where you should give your input and chnage the situation for a better one: society today demands the young children to much of growing up before the time, a child emotional system is soft and sensetive and any guidance especialy in young years up to 7 is highly important and supportive.
Regards
Lee