doesn't mean it is.
Basic problems with getting news of things like this out:
A lot of the media does not want to report such.
A lot of the media does not want to believe such is even possible, so don't want to report on such.
Many who read of it don't want to believe it, either.
All of which makes it easy to read "It's a hoax!" and believe that, even if there's no actual proof of it being a false story.
And it is hard to wrap your mind around, that people in a major city would do such things; and that the authorities would either not dare to interfere or actually encouraged it. Or both, depending on different departments, etc. Nobody wants to believe that a bunch of people they've been told are just 'friends of a different religion' are quite willing- even demanding- to do these things. Not just a few people, but massive groups in many places.
Caught Limbaughs' show one day when he was having a fit about a news story about feral cats being trapped and shot in an area; it just about drove him up the wall. I don't know if anyone pointed it out to him, but they're not talking about his pet cat getting out into the yard for a while, they're dealing with wild cats, feral cats, and they do a lot of damage to wildlife. Well, to stretch the metaphor a bit, we're not dealing with your muslim neighbor or friend who likes modern civilization, we're dealing with the ferals who'd be quite happy to murder you, then rape and murder your wife and children. Or maybe keep them as slaves. After all, there's a long history of that:
It was written in their Koran, that all nations which had not
acknowledged the Prophet were sinners, whom it was the right and duty of
the faithful to plunder and enslave; and that every mussulman who was
slain in this warfare was sure to go to paradise. He said, also, that
the man who was the first to board a vessel had one slave over and above
his share... 
Like it or not, want to believe it or not, the threat to us is from people- in those countries and here- that truly believe in that. And wishing or pretending it otherwise doesn't change that.
Imagine some news crew or freelance reporter did get video of such- a crucifixion, a mass murder, a working slave market- and tried to get it broadcast, with full background data; the internet is probably the ONLY way it would get out, because most of our 'professional journalist' clowns would do everything they could to prevent it. If they did show it, it would be hedged around with 'unconfirmed' and 'CAIR says it's a hoax from someone eaten up with islamophobia' and so forth.
One more thing: isn't it interesting that people who'd crap bricks about your 'hate speech' at daring to show such, or report on such, who'd accuse you of hating all muslims and all that crap, tend to be people who will believe just about any accusation against US troops, no matter where it comes from?