Yeah, that really disturbed me. Mr. Markham seems like a pretty reasonable guy, a mainline Republican, possibly even a moderate. And he's basically advocating fascism, here.
If it happened in Germany, it can happen here. Germany had Liebniz, Kant, Mozart, Einstein, the Reformation.. no reason to think that we're so much better.
( I really tried to avoid Godwin's law here, but I couldn't. The news debate has rapidly turned from "what is our government doing" to "just how unamerican is this guy, anyways". It's a bad trend. )