Not sure what has changed in the mentality of those who now seem to idolize the evil.
Many things have contributed to create what we're seeing. The
incessant glorification of violence on TV, in movies, in game themes, in music, etc. Children being brought up to believe there are no winners or losers, that there are no consequences to their actions and that they're "owed" success by the very fact of their existence. (Then running into the Brick Wall of Reality.) Everybody looking out for #1, regardless the cost to their own well-being and that of those around them. People valuing
things over all else, quantity over quality, and
now over a future. People being lied-to constantly--by the government, by the "news" media (which is more entertainment than news), by the "education" system, and, worst of all, by themselves. All the while knowing it and accepting it--as long as they're lies they like.
Somebody earlier said "only in America." Not really. It's just that here in the U.S. we're not seeing the whole of what's happening in the rest of the world. (Re: "news," above.)
What we're seeing is a world going mad. And the madder it gets the madder it gets. Sounds like a tautology, but it's actually an expression of what's called, in engineering terms, a "positive feedback loop." The effect appears to be accelerating because
it is.
Did you know recent studies suggest people are becoming more stupid, and have been for some time? I wish I was making it up. One might question whether we're becoming more stupid as a result of the declines in society or the declines in society are a result of our becoming more stupid, but there's no denying both are occurring. Lifespans are declining, too.
In other words, for all our advances in knowledge, science, and technology: Human civilization would appear to be in decline.
There might be a way out of this, but I certainly have no clue as to what it is