Charles is fond of pointing out inappropriate uses of the word "but."
Unless you have walked in my boots, seen what I have seen, put your life and the lives of your men on the line for the freedom of others and seen your men killed and wounded, keep your opinions to yourself. Yes, you have the freedom of speech, BUT I earned your freedom and fought for it, and so has everyone who wears the uniform now, or wore it before me, and those who have paid the ultimate price.
In other words, "agree with me, or shut up."
CAIR couldn't have said it any better.