As Daniel Greenfield explains brilliantly, the Western media and politicians have their reasons for choosing to ignore the 'Elephant in the Room' of anti-Semitism that is not only rampant throughout the Muslim world, but is the main driving force of Arab societies. The Muslim world makes no attempt to hide its rampant anti-Semitism which dominates its media and politics. But the Western media and politicians go to extraordinary length to stop their public from knowing about it because to admit such anti-Semitism exists destroys the narrative of Muslim and Arab victimhood which underpins all Western liberal world views. That is why, for example, the media ignored the anti-Semitism which dominated many of the images (see below) from the "Arab Spring" (see here and here).
But there is nothing new in turning a blind eye to such genocidal anti-Semitism. As this article describes the Western media and politicians went to similarly enormous lengths to cover up the extent of Nazi anti-Semitism in the 1930s, which the Nazis themselves made no attempt to hide.
P.S. It is worth noting that one of the few websites in the world that chronicles Muslim anti-Semitism (pamelageller.com) was the subject of a massive denial of service attack over a week ago and is still out of service. It is no coincide that Pamela Geller, along with Robert Spencer, was banned from the UK to