ISIS videos are sickening. They’re also really effective.

ISIS Propaganda is terrible to most people. But it has been a key component to the group's recruiting success.

Subscribe to our channel! http://goo.gl/0bsAjO

Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com to get up to speed on everything from Kurdistan to the Kim Kardashian app.

Check out our full video catalog: http://goo.gl/IZONyE
Follow Vox on Twitter: http://goo.gl/XFrZ5H
Or on Facebook: http://goo.gl/U2g06o