This is an interesting article. It gives us a clue about why South Koreans have no problem showing their anti-Americanism but might be hesitant about showing anti-Chinese behavior. They fear the Chinese and don’t fear the Americans.
From the article:
An American living in Seoul recently asked me this unexpected question: “What would have happened if the Olympic torch relay had been linked to the U.S. and Americans in Korea rioted like Chinese residents in Korea did a while ago?” It probably wouldn’t all have ended in smoke, and Korea would certainly have been flooded with so-called candlelight vigils; it’s hard to tell ourselves that there would have been no retaliatory acts.