They are called the ACLU, or The American Civil Liberties Union. They defend terrorists, Nazis, National Man Boy Love Association. If it is bad for America, the ACLU loves it.
Read this article of this oh so constitution loving ACLU Attorney.
What the ACLU defends is the right to free speech, the do not condone the actions of NAMBLA, Nazis, or the Westboro Baptist Church. They will, however, defend their right to say their piece, no matter how stupid it is.