A heated altercation between two girls takes a dramatic turn when a teen boy tries to intervene—by striking one of the girls with a bag full of coins. What began as a scuffle quickly escalated, drawing shocked reactions from bystanders.

A violent fight broke out at the Walmart on Ford Road near the Southfield Freeway, and now the footage is spreading rapidly online. The cause of the altercation remains unclear. Dearborn police responded to the chaos, but it’s unknown if any arrests have...