Something very ugly seems to have gone down during an exhibition basketball game between the Georgetown Hoyas and the Chinese professional team Baiyi. The Washington Post's Dan Steinberg has more photos up on his blog. Here's an account from an admittedly partisan Georgetown fan who blames the incident on lopsided officiating by the Chinese refs.
In any event, it's probably lucky for U.S.-China relations that this wasn't the same game attended by Vice President Joe Biden.
Update: Here's video, via Ray Kwong: