Think about it. They are one of the few people in entainment, industry, or government who just
do what is right. We all see every day just too many citizens and politicians advancing their own agendas, skimming $$ in one business scheme or another, promoting government policies that put more $$ in their pockets, cowering in fear of KKKarl Rove and the BFEE, voting for bush because they like their tax cuts (oh, and all the rest isn't so bad...), or just not giving a damn.
And then you have the Dixie Chicks.
Here's the link to the same letter, but on their web site (the one in the original post is from an article).
http://dixiechicks.launch.yahoo.com/news.asp?id=57