This is a typical example of a patron throwing money at polo without taking any “proper” polo and riding lessons. Inexperience can cause fatal accidents to others. Rules are put in place for the safety and welfare of the pony and the rider. This player simply does not pay attention and his inexperience costs him a big tumble! Both pony and player are going to be sore in the morning!
How does this video help my project? It highlights that accidents can happen at any time during a polo match even involving your own team mates. Therefore it is essential to design a helmet that might actually protect his limited brain cells.