How not to discipline a child - Judge's daughter releases video

See, I was born and raised in Nigeria where corporal punishment is allowed from primary through secondary school and so I'm a bit immune to beatings (one major disadvantage of punishments). However, my parents only administered the cane when necessary, and there were never whips or belts flying around.

I recently read about how a daughter, now 23, released a video of her father, a judge, whipping her when she was 16. Mike's post on Sparing the Rod was fresh on my mind then and I couldn't help wincing as I watched the blows land on the girl. Why would parents do that to their own child? Why would you vent your anger on a child in the name of punishment? And the mother, telling the girl to take it like a grown woman. What grown woman would take that kind of beating from another person?