The Ankara bombing of a peace rally organized by Kurds, labor unions, and civil society groups was the worst single act of terrorism in Turkish history. Among both Turks and those outside Turkey, it has shaken confidence in Turkey and its stability. No terrorists have issued a claim of responsibility.

Within Turkey, the government suggested either the Kurdistan Workers Party (PKK) or the Islamic State (ISIS, ISIL, Daesh) might be behind the bombing. The PKK and its offshoots have certainly engaged in terrorism in the past, but in recent years the PKK has transformed itself into much more of a traditional insurgency: It targets Turkish forces that target it, but it does not bomb Kurds marching to call upon the Turkish government to stop bombing the PKK.