At first glance, it seems obvious -- of course Twitter and YouTube have the right to take down a video showing the American journalist, James Foley, being beheaded. The question is why taking it down is controversial at all. The answer, I think, shows how important services like Twitter have become, and how this has thrust unexpected responsibilities onto them.

Anyone with a brain or a heart cannot help but be deeply disturbed by the unending and seemingly accelerating torrent of grim -- sometimes horrifying -- stories emanating from the Middle East. This week's gruesome, heartbreaking news of the beheading of American photojournalist James Foley is shocking evidence to this effect. 

Every week residents in the town of Kafranbel in Idlib, north west Syria, release a photo or sign related to current events in an attempt to draw the world’s attention to the ongoing civil war in their country.