Until I saw Ed Brayton's post about a math teacher fired from Cal State East Bay for refusing to sign a loyalty oath, I had mostly forgotten that I might be technically guilty of perjury. Y'see, as a public employee of the state of California, I was required to sign that exact same oath:
...

Of course, as Eugene Volokh points out, these sorts of loyalty oaths have never been construed to require violence, or cheering for Stanford's tax loophole, or any other specific action. The only reason they're legal at all is that they are effectively meaningless. So by requiring them, and refusing to allow Kearney-Brown's modifications, we're not doing anything to ensure that a reserve army of math teachers will wield sharp pencils and calculators against the combined onslaught of terrorists, Mike Huckabee, film critics, zombies, Zombie Mike Huckabee, and Canada. We're just making sure that men and women of integrity can never hold public office.

I usually think cynical jokes about how politicians love corruption and empty promises are too obvious to be funny, but if you like them, feel free to insert such a joke right here.