[cameldrv]

Freedom of certain kinds of speech is foundational to a society like America that has always been quickly changing demographically, technologically, and economically.

We are making up the rules of society as we go along, and we are going to make mistakes, and circumstances will change such that old rules don’t work anymore. In order to figure out what new rules should be, we must be able to discuss them. If the proponents of one set of rules are able to prohibit the discussion of anything else, you had better hope they have the best possible set for all time, because you’re stuck with them. Collapse is inevitable if anything significant ever changes.

The reason to hold the line and do things like defending Illinois Nazis is because two sides on a contested issue will always want the other side to shut up. The powerful side will always come up with some excuse as to why the weak side must urgently be silenced in the name of safety. Strong principles are powerful because they give moral authority to help the weak stand up against the powerful. If there are obvious, clear exceptions like yelling fire, it’s probably OK, but it still gives the strong side a toehold to draw an analogy and silence the weak.