Collide Competition

You are working with a cultural group with customs that are foreign to you. One of their traditions is for children to run at each other as fast as they can and collide. Sometimes they lead with their heads. The parents encourage this behavior. Although the children wear protective gear, they sometimes have serious injuries including broken bones, torn ligaments, and concussions. Parents sign legal documents stating that they understand and accept the risks. You believe this is a form of child abuse but do not know how to stop something that is widely accepted in this culture. 

“What do they call this strange practice?”