Passionate sports fans can be some of the meanest and that's certainly the case with fanbases in World Football.
Some fanbases are well known for their offensive, nasty or malicious behaviour.
Whether it's comments or sometimes even actions towards a player, team, coach, referee or opposing fans.
While some of these fanbases have calmed down in recent times their history make them solid candidates for such a list.
In other cases even just one particularly heinous action puts them on the shortlist.
The meaner the crowd the higher the ranking of course.
Here are the 15 meanest fanbases in world football.