I understand the points being made - but this shows a tremendous lack of judgement and ignorance, especially considering one of the players doing the gesture, Facundo Conte, PLAYED IN CHINA PROFESSIONALLY FOR 2 years. Is that not sufficient enough contact with another culture to understand that such a gesture is wrong? And if he did understand the connotations of the gesture, he damn sure should be able to explain to his teammates that its not cool, and lead by example. The only thing I can surmise is that he's either a willfully ignorant idiot, a blatant racist, or both.
By the way, I am very against much of this political correctness movement. I don't think this is comparable to making fun of the British for drinking tea, as others mentioned. That is a cultural norm - I think you run into trouble when you start poking fun at the way people are biologically created and cannot change.