Also tell him that, he doesn't have authority towards others body. Tell him that, If he hurt others, he is answerable to their parents. This usually frightens them. It will eventually stop. If he hits another child in from the parents and they step in to discipline ur son, don't interrupt. Let him face them. Because life works that way. Every time we cannot hover near our child. Let him take responsibility for his actions. Actually it's the best way for them to learn.
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