If it were "only" entertainment. It's worse than that -- it's "business!" One of the more insightful things I've learned in my lifetime can be paraphrased like so: "There is just as much money to be made in tearing down a civilization as in building one up. But the former is much easier, faster, and more reliable." Find those (people/companies/governments/religions) who increase wealth and/or power as a result of this, and you will find the culprits.