After the world cup 2010 in South Africa Bayern (where at that time both Van Bommel and Robben were playing) got into a dispute with the Dutch national team (where both play as well) because of an injury Robben obviously seems to have on his hamstrings I believe.
This injury caused Robben to miss a few matches and Bayern started to nag about compensation for an injured player, which at it self is quite absurd as a national team has all the rights to select a player.
To compromise their dispute Bayern and the national team of the Netherlands agreed to play a "compensation match" where all the benefits would go to Bayern (roughly 3,000,000 i believe).
In this match Robben logically played for the national team and not for his clubteam and as a reward he got jeered and bullied by a large part of the Bayern "fans", his own fans normally.
This is a disgrace and not normal that a home crowd bullies their own world class player that has brought huge successes during the last couple of years.
The only thing Van Bommel did was standing up for Robben as he was completely down after the match and wasn't even able to talk to the press himself.
Dont understand why a captain can't stand up for his own teammate, but ok. I think it shows a great teamspirit and great respect for your fellow player.
Maybe this explains it better
http://sports.yahoo.com/blogs/socce...nich-fans-netherlands-friendly-045140833.html