What are the Limits of Free Speech?

Should a talk-show host be allowed to say Christianity is a terrorist organization? Should a talk-show host be allowed to say Islam is a terrorist organization?

We can't yell fire when there is none in a movie house. We know that. But where does speech become an infringement on another person's life?

As far as I can tell, besides everyone and not just people looking like they are of Arab descent, are being viewed as a criminals at the airport, people who practice the Islamic faith have not been singled out or abused like one might have thought would happen after 9/11.

Anyway, read this blog here about a talk-show host getting fired for equating Islam believers with terrorists. He insists his perspective was more nuanced than that.