I really think freedom of speech should be defended here. "I may not agree with what you say but I will fight to the end for your right to say it." OK, with the exception of threats and such...
But my point is Turker's avatar. Why should he not be allowed the "TRNC" flag in it? The flag in question represents the Turkish Cypriot community and he should be able to have any picture he likes, whether or not you recognise the TRNC (I don't, but I recognise the existance of Turkish Cypriots)! In fact, the avatar in question is about peace! Please accept that.
I would hope that the "TRNC" flag is not used to represent the future "Turkish Cyprus State", but anyway, freedom of speech is golden, don't deprive it of anyone.