This is now well past the effect on Adam Goodes. He is now taking leave because it has gotten to him (though a few idiots on BF have claimed this as a stunt). It has upset his mother. His family. Jetta, for example, sick of a fellow teammate and aboriginal man being treated like AG has been. Jetta's family, no doubt, affected as the searchlight has moved to him. Look at the responses on Twitter etc from Aboriginal players in all AFL teams. They find it affecting. Look at the commercial released by the Bulldogs (which is excellent, btw) and ask what environment that team would like to play in. Look at Jordan Lewis and Brendon's Goddard. They want this stopped. Look at the discussions from the players association. Unanimous in wanting this to stop. AFL players don't want this.
So if you are considering the 'I won't be told what to do by Goodes, or Gil, or whatever, I'll boo Goodes if I feel like it, think of how it could affect lots of people. Think what this could mean to a sports gifted little kid in NT and his life decisions, to see an aboriginal sporting great treated in this manner.
I don't see why it is so hard to say - know what? I'm not going to join in this crazy booing every time Goodes is within a foot of the ball. It doesn't matter any more why you were doing it. It truly doesn't matter if you were doing it because you don't like him, or because it felt like a fun crowd thing to do, or because you are racist. The important thing to consider now is what impact this has on a large group of people who have good reason to be distressed. It can't be hard to stop surely? It's not a compulsive reflex. You can just choose not to.