Hmm... there was possibly an element of truth in that classical values post about sexual repression and violent societies, but its worth mentioning that sexual preoccupation can also causes violence aswell as sexual abuse. There are plenty of serial killers and rapist that are anything but celibate, Mussilini and Moa Zheng Tung were perverts (although Mao wasc a hypocritical pervert who sexually repressed everyone else enforcing abstinance on his population while screwing like a bunny himself)
A lot of serial killers were sexually abused as children.
The bit about forcing muslims to watch porn and get body searched by poledancers in airports was quite disturbing and reminiscent of a somewhat milder version of Abu Ghraib. Maybe if muslims had healthier sex lives they might blow themselves up less but sexually abusing people is not equivalent to giving people healthy sex-lives and is in fact traumatising and counter-productive. I would consider bombarding people with pornography against their will and forcing them to be felt up by poll dancers to be sexual abuse.
Also to do with sex and violence I believe in the 1950s the crime rate in America was lower than it is today and while I'm sure there was a moderate degree of promiscuity and pre-marital sex back then I'd be willing to bet that people had less sexual partners back then then they do now.
Of the people I've known, I've found those at the tail end of promiscuity (i.e. the ultra-promiscuous sex addict types) tend to be less happy and more restless on average than those of a more moderate disposition. They also tend to be more manipulative and deceitful in their various ruthless quests to satisfy their craving.
Marriage and sexual moderation are traditions common to a wide
number of different cultures and are as old as civilisation, we throw the norms and institutions away at our peril.
Oh and not all the eastern European women in Amsterdam are there of their own free will, tens of thousands of sex-slaves are imported into Europe every year, told by someone in their homeland that they can hook them up with someone offering a comparatively well-paid job in IT, or waitressing or whatever and then when cross the boarder their sold to a pimp who rapes and intimidates them and forces them to have sex with clients.
Ofcourse ther are plenty of other prostitutes who do it of their own free-will..
In Netherlands, it is estimated that there are from 1,000 to 7,000 trafficking victims a year. Most police investigations relate to legal sex businesses, with all sectors of prostitution being well represented, but with window brothels being particularly overrepresented.  In 2008, there were 809 registered trafficking victims, 763 were women and at least 60 percent of them were forced to work in the sex industry. All victims from Hungary were female and were forced into prostitution.  Out of all Amsterdam's 8,000 to 11,000 prostitutes, more than 75% are from Eastern Europe, Africa and Asia, according to a former prostitute who produced a report about the sex trade in Amsterdam, in 2008. An article in Le Monde in 1997 found that 80% of prostitutes in the Netherlands were foreigners and 70% had no immigration papers.