A clash between two wild horses causes a lot of commotion in a herd

In an open field in the Oostvaardersplassen, a nature reserve in the Netherlands, some wild Konik horses are causing a lot of commotion by rumnning, fighting and biting each other.
Most of the other horses are trying to avoid the battle and step aside.
If horses fight it will be for dominance or for the right to rule their herd. In their herd they always want to be the leaders. We dont know what the reason of this batlle was, but it looks very impressive.