It's not liberalism per se. It's sheltering kids from the realities of the world. Something that happens a lot at home or at church or in school or on TV by political leadership.. It's what happens when folks try to control the dialogue and the language by "censoring" terms like Islamic terrorists, or not educating about the world.
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Here's the problem with that mentality. "Islamic Terrorism" (really, just people of the third world taking a shot at their oppressors, but we won't have THAT discussion, too scary for most of you people) are kind of like shark attacks. Really kind of scary, but statistically rare.
You are, of course, more likely to be murdered by a family member, lover or neighbor than a scary Muslim. Or just some poor kid who wants to boost your wallet because no one bothered to teach him how to read... but again... not sensational like "Terrorism" (a word I would TRULY like to expunge from the English language).
So these girls went to a tourist spot that millions of Europeans go to every year, and they ran into the wrong angry guys...
Islamic terrorism is just a SYMPTOM of a larger viral tendency to violence in the Arab world. Not SOLELY inspired by religion, so you're partly justified. It's the "re-mapping" of the Middle East that was done by Sikes-Picot agreement after the fall of the Ottoman empire that CREATED the tribal, sectarian, familial violence that you see in pictures of COMPLETE devastation in Syria today.
That caused the rise of "nation-states" which is a totally foreign concept in the Arab culture. They are NOT governance built around the preferred Arab system of LOCAL, tribal, sectarian, familial rule. And they REQUIRE a ruthless SOB dictator to stop the blood flow.
We become PART of those conflicts when we topple dictators or nation-build the nation-states that the Arabs don't trust because of corruption and consolidation of power. So Islamic terrorism is a large threat when Western countries take in huge influxes of folks from that Arab culture that DONT WANT TO BE French, British or American. They just don't want to DIE in totally pulverized hell hole during a war.
They are NOT shark attacks. Because sharks don't commit heinous crimes. And to minimize and ACCEPT the impact of those crimes moves a nation away from security thru the rule of law.
Those girls DID NOT just visit a "tourist spot".. They went out of their way to validate their concept that "Islamic terror attacks" are as rare as lightning. And they got hoodwinked by folks like you agreeing with their conviction.. Feel free to go "camping" in the wilds of Morocco to prove your point.. Bring your "world peace" banner with you... And post a "no beheading zone" sign for your protection... 