Bruce Springsteen has spoken out in support of the Dixie Chicks!
And he did it using his blog (of sorts):
Bruce On The Dixie Chicks

The Dixie Chicks have taken a big hit lately for exercising their basic right to express themselves. To me, they’re terrific American artists expressing American values by using their American right to free speech. For them to be banished wholesale from radio stations, and even entire radio networks, for speaking out is un-American.
The pressure coming from the government and big business to enforce conformity of thought concerning the war and politics goes against everything that this country is about – namely freedom. Right now, we are supposedly fighting to create freedom in Iraq, at the same time that some are trying to intimidate and punish people for using that same freedom here at home.
I don’t know what happens next, but I do want to add my voice to those who think that the Dixie Chicks are getting a raw deal, and an un-American one to boot. I send them my support.
Bruce Springsteen