He advocated a federalist agenda, in favour of splitting Turkey into several federal states in order to give the Kurdish dominated regions more political autonomy.

On 25 October 2015, just six days before the November 2015 general election, Demir was killed in a traffic accident while travelling on a motorway through Tarsus in Mersin Province.

[2] The HAK-PAR held its 6th Ordinary Grand Congress on 26 October 2014, where 278 delegates cast their votes for a new leader to succeed Kemal Burkay.

On 25 October 2015, Demir suffered a traffic accident on a motorway in Tarsus, Mersin Province, after his vehicle crashed into another car with an Austrian license plate that had broken down.

[4] His funeral took place in his hometown of Cihanbeyli, Konya Province and was attended by many pro-Kurdish political leaders including the Peoples' Democratic Party (HDP) co-leader Selahattin Demirtaş.