The High Chaparral (1967)

S4E10 Fiesta

While traveling to a festive border town, Buck finds himself in a precarious situation after he befriends a young Mexican boy. He meets Homero Jose, a traveling promoter who profits from organizing fights between lonely Mexican youths for betting enthusiasts. Disturbed by the sight of 11-year-old Beto getting hurt, Buck decides to rescue him, aiming to find a better life for the boy. However, Jose, filled with anger, starts pursuing them, determined to reclaim Beto for his own purposes.