SDF & PKK = Kurdish ISIS .
Two Civilians Executed By PKK/SDF Militants
The way i know the Goatfckers, those are HTS/Turks, and they just pretend to be Kurds. Also, even if some Kurds kill civilians, overall the kurdish militia SDF saved and protected christians and other minorities from ISIS, while the Islamists of HTS/Turkgay want to kill everyone that isnt a sunni muslim.
They are not PKK PKK did stop their armed fight, if they are Kurdish fighters from Syria (in case this video description is true) then they are SDF that is another faction than PKK.