In the West, anything that must be hidden is suspect; availability and honesty are interlinked. This clashes irreconcilably with Islam, where the things that are most precious, most perfect and most holy are always hidden: the Kaaba, the faces of prophets and angels, a woman's body, Heaven.
In many countries in the Middle East - and this is changing in the wake of the Arab Spring - but for a long time, censorship of books and film was a very big deal. There were books you couldn't buy; things with political content would be censored, but there were some genres of books and film that the censors just didn't understand.