In 1857, Uyghur Sunni Sufi Islamist separatist Wali Khan Khoja beheaded Christian German explorer Adolf Schlagintweit and hoisted his head on display in Kashgar.
In 1933, Uyghur Sunni Islamist separatist rebels led by Abdullah Bughra massacred and beheaded Hindus and Uyghur converts to Christianity, and beat and tortured the Swedish missionaries who converted those Uyghur Christians. Abdullah Bughra accused the Swedes of being enemies of Islam and was going to kill them after the torture but the British authorities intervened to save the Swedes.
In 1997, Hassam Mahsum, the Uyghur leader of the Turkistan Islamic Party joined Al-Qaeda in Afghanistan and swore allegiance to the Taliban and met with Bin Laden. Uyghur fighters of the Tyurkistan Islamic Party fought alongside Al-Qaeda and Taliban against the Americans at Qala i Jangi and Tora Bora.
That is why Amerian soldiers arrested Uyghurs in Afghanistan and sent them to Guantanamo and then drone striked the Uyghur terrorist leader Abdul Shakoor Al-Turkistani and Abdul Haq al Turkistani. America wasn't trying to be nice to China. It was because Uyghurs were fighting against Americans for Al-Qaeda. Uyghurs are still fighting in Afghanistan against Americans and the Afghan army.
In 2012 Uyghur Turkistan Islamic Party jihadists went to Syria and joined Al-Qaeda there. They murdered Syrian Christians, destroyed their Churches, knocked the crosses of the Churches and put their flags on the Church. they drove Syrian Christians out of their villages and now live in them today.