Western art has always had at its base the Bible and the Christian Weltanschauung.
When the West began to be discard this, in the very late 19th century and throughout the 20th, and viciously in the 21st, what we began to see was first a disparagement of God then finally His full-out rejection.
Man cannot live by art alone, so what we started to get was a slow incursion of alien deities. This of course found its perfect league with immigration and multiculturalism, which let in, with open arms, all those alien god practitioners.
We see it now our arts institutions, but of course this bleeds into our daily lives and environments.
Here is what I took yesterday at the Square One mall in Mississauga where one (of many) stores carefully exposes us to its godheads. At the very entrance, right next to the Canadian iconic department store, Hudson's Bay, we have this:
Of course Harry Potter is the black magic movie which was such a big hit amongst vulnerable young children, mostly white and of "Christian" families.
Where there is a void, the demons will fill in. The post-modern, anti-God, anti-life Western civilization, with its Urban Decay emblems and Harry Potter magic, has allowed that to happen.