Bo-taoshi (pole toppling) is a contact sport in which two teams each try to keep a large pole upright. Half of each team is on defense, and the other half plays offense. There's a player who stands on the top of the pole and kicks everyone in the face till they yank that player off the top.
Here's another angle:
https://www.youtube.com/watch?v=PDg5em2yaTE
• Dangerous Japanese Sport (YouTube / Steve Raw via Bill Burr)