Throughout history, poverty is the normal condition of man. Advances which permit this norm to be exceeded — here and there, now and then — are the work of an extremely small minority, frequently despised, often condemned, and almost always opposed by all right-thinking people. Whenever this tiny minority is kept from ...creating, or (as sometimes happens) is driven out of a society, the people then slip back into abject poverty. This is known as "bad luck."
Take sex away from people. Make it forbidden, evil. Limit it to ritualistic breeding. Force it to back up into suppressed sadism. Then hand the people a scapegoat to hate. Let them kill a scapegoat occasionally for cathartic release. The mechanism is ages old. Tyrants used it centuries before the word "psychology" was ever invented. It works, too.
-- R.A. Heinlein
The Park in the picture retained its 1969 character until 1989, when the Soviets withdrew. By 2001, after just 10 years of feudal infighting and Theocratic rule, it was in the same state it is now.