Putting gloves on the fighters was a symbolic change that suggested that we were now making it a civilized sport, and it was no longer this crazy gladiatorial throwback to ancient Rome. It's even in our language: If you want to get serious and violent, what do you do? You "take the gloves off." Bare-fisted is supposedly a much more dangerous way to hit someone. But we've got it completely backward. The glove is a weapon. It massively accentuates the ability of the fist to do harm.