Why would any parent forcibly shave their kid as a punishment?

I'm still upset about it. My hair just recently reached the length it was when my dad shaved it all off in some stupid power play before I left. I shouldn't have told him I wasn't coming back. Maybe he wouldn't have panicked and I could have gotten out the door. At least when I was young, he was only erasing a few months of hair at most. He ended up cracking one of my ribs the last time too, but that also only took a couple months to heal. It took me 2 years of being obedient and nice and really careful to grow my hair out that long the last time though, and then he just erased all that at the last second. I would rather die homeless than even hear his voice ever again.

Why would any parent forcibly shave their kid as a punishment?
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