Also to mention that, as opposed to the poppular idea that many racist forumers here would love to believe, Kurdish is not banned anywhere in Turkey.
It can be thought in schools and it has been, probably still is.
There is a Turkish TV channel that broadcasts in Kurdish.
Radio channels DO exist that broadcast in Kurdish.
The only problem is that it happens to be a piece of shit language that not even the Kurds themselves bother going to school to learn it (if they go to school at all), simply because it is not worth anything and it has no correspondence in any field around the world what so ever.
The only purpose it serves at the moment is to be used as a political stunt tool by idiots like Türk, who will probably get persecuted because he could have been speaking Martian if he wanted to but would have still been illegal.
Basically, speaking Welsh is probably more useful than speaking Kurdish.