There is a magnificent blog article by Sean Thomas about the Yezidi people of Iraq at the Telegraph and their plight at the hands of the hateful bigot of ISIS.
The current plight of religious minorities in the Middle East* isn't restricted to the Yezidi, Christians have suffered terrible persecution too partly as a result of the Iraq War. If those peoples had a nation that could defend them and provide a refuge they wouldn't be looking at annihilation. Which is one reason Israel will do it's utmost to remain a Jewish state that is strong enough to defend itself against all its neighbours.
* While the Middle East is the current heartland of violent bigotry almost every region on Earth has periods where belonging to a stateless minority has been very dangerous.
57 minutes ago