CNN asked . ` Officials estimate 10,000-20,000 Yazidis on Mount Sinjar . ISIS has captured more villages in Syria , activists say . `` They join them , and actually they kill us , '' a Yazidi says of Arab residents . TL;DR The Islamic State group is using the threat of genocide to force people from their homes -- including women and children -- as it advances toward Iraq's second largest city, according to an Iraqi official. U.S. fear for them .
Officials estimate 10,000-20,000 Yazidis on Mount Sinjar . ISIS has captured more villages in Syria , activists say . `` They join them , and actually they kill us , '' a Yazidi says of Arab residents . TL;DR The Islamic State group is using the threat of genocide to force people from their homes -- including women and children -- as it advances toward Iraq's second largest city, according to an Iraqi official. U.S. fear for them .