If you are going to oppose the "conservatives" by ignoring free speech and the principles of reasonable discourse then I'd say you are a radical, almost by self-definition. Thank goodness there arent many of these people in America, as you correctly point out
You've missed my original point (see page 1). There cannot be reasonable discourse with armed brownshirts. If they had shouted down Pat Robertson, I'd be upset. If Pat Robertson raised a private army and decided to take matters into his own hands with complicity of law-enforcement agents, then he's fair game. I've never commented on whether this action was effective, but it certainly was not an attempt to shut down "reasonable discourse" but rather to ensure that we can continue to have it without fear that the ability to do so will be compromised by paramilitary organizations that operate beyond the law.
I'd rather not abandon reasonable discourse anytime someone can compare some people to Nazis. As far as I can tell, that's all you're doing--calling them Nazis. Unless you can give some evidence that these people pose a threat to democracy greater than the Confederacy, I don't think we should start suspending rights or even our manners.
Listing a bunch of constitutionally protected freedoms that they happen to exercise--bearing arms, forming a militia, right to assemble, speech--doesn't make them a giant threat to the US that you're claiming