Fights are necessary in one form or another in the nature as well as in human society, be they literal fights, battles, wars or more civilized and tempered - or suppressed - ones, known as struggles. I cannot come up with any truthful description of any factual human civilization, tribal society or other organized, let alone non-organized population of people or group of people (with inevitable inherent sub-groups and sects) where this universal law of struggle did not hold and apply. Margaret Mead, an anthropologist of the Peaceful Pacific, might have presented such a dubious case once (or then it was someone else) but later it turned out to be a fraud, fabricated description of her own imagination. So, let's cut to the chase. I have always welcomed all physical and contact sports as an apt and controlled means to channel out organic and psychic pressure, inner tensions, charged mental energies, aggression - just name it. And in adolescence this need for letting some steam out on regular basis is more acute and urgent than in any other period of life. Well, individuals are of course different and some prefer playing chess or flute serenely, draw horses and butterflies in the attic or knit shirts and stuff for boys, but, in good old general, healthy young men of aspiration need these physical and or verbal, energetic confrontations time to time, the actual form of which only varying depending on the given environment. If a brisk healthy athletic Canadian boy enters a fight on ice mittens dropped it should not worry us in the least. Everything fine and well in the world as it is.
Mead came up with this fanciful matriarchal Bornean (?) society, at least. If there has never been any tranquil, completely peaceful, non-violent society in any form there has never been a matriarchal society either, run and led solely by women. Go figure.