In football, soccer and boxing there are regulations in place to do everything possible to keep the participants safe. They are also legal. Was this private boxing match legal? Did the obtain necessary permits, etc? Were there any rules in place to keep it as safe as possible? Or was it just a parent-sanctioned street bawl with no regard to the safety of those involved in the fight?

You need to study what it means to have common sense. And common sense dictates that a parent does not take a child to participate in a street brawl.