http://www.barenakedislam.com/2014/09/22/iraq-yazidi-woman-is-shocked-that-the-muslim-neighbors-she-had-known-all-her-life-turned-on-her-people-as-soon-as-isis-showed-up/
"IRAQ: Yazidi woman is shocked that the Muslim neighbors she had known all her life, turned on her people as soon as ISIS showed up
Sorry Nadaya had to learn the hard way that Muslims will never be your friend unless you convert to Islam. They will drink tea in your house one minute and stab you in the throat (literally) the next minute."
http://www.youtube.com/watch?feature=player_embedded&v=wr2rRJ8NpQY
In other words, what had appeared to be heterodox Muslims, turned orthodox, as soon as support arrived on the scene
full show - worth the watch
http://www.cbsnews.com/news/isis-the-islamic-state-on-the-ground-in-iraq/