If Turkey joins the EU then we will have the comedy situation that denial of the Armenian Holocaust is a criminal offence in France, whilst mentioning it is a criminal offence in Turkey. The happy result of this could be that the entire population of France could be lifted and placed, Midnight Express like in Turkish prisons. Of course the entire population of Turkey could then find itself extradited to France and imprisoned there.
Before anyone objects, yes, it’s of course true that the laws in question do not actually compel citizens to speak affirmatively on behalf of the official view, so it’s still possible (through silence) to avoid breaking anyone’s law. The concept remains funny, though.