I find it funny and amusing to root against professional athletes based solely on their country of origin. cant think of an example where I do it but not that you brought it to light, I am going to start..Why would you not want to watch the best players? It is like saying I like watching baseball, but I root against the Dominicans and Venezuelans, or "I can't wait for the hockey playoffs, but I don't root for the Russian players".
Weird.
Regarding your hockey example, I've always rooted for Russian hockey players dating back to the infamous Red army days. they had this mystique about them.. found that European style more entertaining than the Canadian style. now it's just a vague stereotype but back in late 80's and even early 90's, there seemed to be a distinct "European style" and a "Canadian style."