This looks pretty G. According to AnimalNewYork:
These punches can kill. For twelve years, director Ian Palmer has documented the brutal, bare-knuckle duels between these feuding Irish Traveler families, but they’ve been at it for generations.
Knuckle focuses on the secretive, seldom-seen community’s two brothers who have to fight for “their reputations and the honour of their family name” and it looks like it’s going to get bloody, dramatic and philosophical.
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