The comment Jim is referring to was made by Natalie Maines, lead singer of the Dixie Chicks: "Just so you know, we're ashamed the president of the United States is from Texas."
I basically chalk this up to poor timing. They new being in London that anything negative said about the US would have a huge positive reaction from the crowd, and that's problably why she said that. I wouldn;t judge the group musically based on their opinions regarding the president. If you think about it, you don;t see millions boycotting the movie "Chicago" because of Richard Gere's extremely anti-war, anti-Bush remarks he made. Practically everyone in Hollywood is anti-war, anti-Bush, and no one has stopped watching television or going to the movies.
If that comment pisses you off, turn on CNN once in a while and find out what other entertainers think.
Here's a related article-
http://washingtontimes.com/national/...6-24182798.htm