The persecution of Yazidis has been ongoing since at least 637 CE. Yazidis are an endogamous and mostly Kurmanji-speaking minority, indigenous to Kurdistan. The Yazidi religion is regarded as "devil-worship" by Muslims and Islamists. Yazidis have been persecuted by the surrounding Muslims since the medieval ages, most notably by Safavids, Ottomans, neighbouring Muslim Arab and Kurdish tribes and principalities. After the 2014 Sinjar massacre of thousands of Yazidis by ISIL, which started the ethnic, cultural, and religious genocide of the Yazidis in Iraq, Yazidis still face discrimination from the Iraqi government and the Kurdistan Regional Government.