@Fil Albuquerque,
That was a straight answer. I don't allow anyone or give anyone the power to disrupt my forum experience in the name of freedom of expression or for any other reason.
Use the ignore button or the thumbs down button. If that doesn't work for you, just scroll past their posts without giving in to the temptation to respond to them.
That goes for A2K, any other website, and in many cases in life itself.