Am I being unfair to the BNP?

I've had an email from the BNP warning me of dire consequences if I don't stop taking the piss out of their questions. I'm quaking in my boots. Apparently I have caused great distress by suggesting their failure to keep their membership list secure represents incompetence in an organisation that wants to run the country, and pointing out that this provides an opportunity for their enemies is an act of terrorism on my part. Should I undertake to restrict my comments to pointing out the vacuous nature of their racist policies?