[1] He is a former Member of the Grand National Assembly of Turkey for the Republican People's Party (CHP) and a founder of the Tunceli Bar Association.
[4] Aygün was kidnapped by PKK militants on 12 August 2012 as he was returning from a visit in Ovacık, Tunceli accompanied with a newspaper reporter and his aide.
"The young fellows who undertook this kidnapping are children of this country too, and they said they wanted to send a message of peace and a call for a cease-fire with this action.
While hardliner Metin Feyzioğlu criticized him for "approaching a terror organization with sympathy", the party's spokesperson Haluk Koç stressed that Aygün had made a call for peace.
[9] Subsequently, he did not seek reelection in the June 2015 general election,[10] where the pro-Kurdish HDP finally won both Tunceli Province's parliamentary seats.