How can I get a message directly to NPR?

I would like to send a complaint to Ellen Weiss and the management of NPR (National Public Radio) concerning the firing of Juan Williams. His contract was canceled over a statement made concerning a personal experience with Muslims, in an Airport. Doesn't he have a First Amendment right to an opinion or feelings? Maybe Ellen Weiss should become Director of Fiction. The news should be a reflection of reality and as Director of News she obviously has her head in the sand. Juan Williams should be commended for stating the obvious and Ms Weiss should resign for failure to support and defend her staff. How will NPR ever maintain an objective outlook when the staff never knows when the ax will fall? Ellen should have evaluated her actions as though she was preparing an episode of "All Things Considered". This time she definitely missed a few "Things".