Reminds me of an incident from my college days. An international student association put on some sort of cultural appreciation event. Students from other countries would perform songs or dances or poems from their homeland.

This was around 2004 or so. I don't remember the political climate being very charged, or at least not at my engineering school. There were blogs but major social networks hadn't yet taken off.

So at this international student event, a guy goes up and says he's going to do a song from his home country, Taiwan. He doesn't get much farther before a Chinese student runs onstage, grabs the microphone away from him and yells into it "Taiwan is not a country!"