A kind of chicken fight: a Japanese game, in which one person “rides” on top of a group of supporters while wearing a hat or flag, which the person tries to defend, while their team attempts to grab the opposing team's hat or flag.

riding a horse / a person on horseback

(transitive) to enjoy something / (intransitive) to enjoy oneself

past tense and perfective aspect of 楽しむ (tanoshimu) [godan]

child

park

(archaic) a battle, conflict, fight, war

a battle, conflict, fight, war / a game, match / a competition, contest / a shiver, shudder, tremble

(especially in sports) match, competition, contest

battle, conflict, fight, war / shivering, shuddering, trembling