1000 cranes for peace - Violence in sports (english homework)

Violence in sports ia aomething that all people (players, supporters...) and this must be finish. This is quite common in sports that there are physical contact like football, rugby, basketball, because players use his body to take "the ball". Maybe, accidentally, you can injure your opponent (no problem, because players have this risks). But there are some players that they dont play fair. I think that this players must be punish by sports federations when they do some dirty reactions because there are a lot of players that are very famous and supporters can imitate them because most of supporters want to be like this players.

Say no to dirty players!

This video has some dirty reations of players that we shouldn't imitate.

In hockey, it has done famous fight during the match, i dont know why happens that...