An 18-year-old suspect who livestreamed himself stabbing multiple people near a mosque in the Turkish city of Eskişehir on August 12, 2024, was fueled by the extremist belief in accelerationism and motivated by past mass killers including white supremacists, an analysis by the ADL Center on Extremism has shown. Wearing a skull mask and a tactical vest with a sonnenrad patch — both common symbols utilized by white supremacists and accelerationists — and armed with…