Yep, I know all about the history, as I said, the Kurds have a bone to pick with ISIS over the Ottomon Empire of which Turkey is essentially the remnants of, in regards to the PKK as well they have imprisoned their leader too so that's naturally got a lot of people riled.
PKK was formed after the Turkish government banned the usage of Kurdish language in public places. These sort of measures are childish. Look at what is happening in Eastern Ukraine. They banned the Russian language in a country where 80% of the population uses it as a home language. The result: tens of thousands of sq.km of land lost to the rebels, along with the largest coal fields and industrial zones.