A Turkish court on Thursday sentenced Selahattin Demirtaş, a jailed key Kurdish politician, to 42 years in jail over his alleged role in violent protests in 2014, local media reported. Demirtaş, former co-chair of the now-defunct pro-Kurdish Peoples’ Democratic Party (HDP), has been in pre-trial detention since 2016. He was a challenger to President Recep Tayyip Erdoğan in the 2018 elections. Another jailed ex-HDP co-chair, Figen Yüksekdağ, was handed just over 30 years in jail on charges of harming the unity of Turkish state and terror propaganda, among others, state news agency Anadolu repor…