It does not matter who they are just get them of planes. English sportstars have also been involved in bad behaviour on board aircraft unless you send out a clear message that this is not acceptable then the problem will just get worse.
Paddy,
Totally agree, its a sad state of affairs, I witnessed an air rage case in 2000 from a PAX point of view and believe me my heart started to thump alot harder. He was complaining his ears were hurting however it was clear to everyone that he was intoxicated. No reason to take it out on the crew. They had a hard time restraining him and he manged to get free and finally settled down. he was arrested at LHR but not sure what happened to him. This day and age and the cases are mounting Airlines should take matters on to themselves for interairline agreements not to permit these PAX on air travel again. Come on we have technology and these people are few. Make examples of them and people will think twice about trying it.