I dont think anyone is saying Pakistani migrants dont take the Turkey route into Europe. Rather this route has been taken by Pakistanis for decades. However I have never heard of Pakistanis engaging in such levels of violence in Turkey. Even the article in the OP states "A Turkish man, Ramazan Sahin, 24, was stabbed to death by an unidentified Afghan, at which point scores of riot police and several armored cars arrived to disperse the crowds.". I for one have stated I am open to correction but having direct relatives who have taken this route have never been informed about such acts being committed by Pakistanis in Turkey.