First off ... in 1984/5, Yuri Bezmenov, Soviet defector, gave an interview on "demoralisation" of a society, the word used in a broad sense, from loss of moral compass to a feeling of helplessness down the track.
He said that producing such a result in a society was the result of long planning and it crosses generations, to the point that once the disease gets into families, schools, media, entertainment, the judiciary, medicine ... there's no coming back.
He added that people reach a point, esp. on the Left, where they can be presented with "authentic information" and those people are then unable to reason, to draw valid conclusions, to see that their behaviour has consequences.
Contrived, handed down non-reality, disguised as wisdom, or in other words ... narrative ... replaces real reasoning, mental health plummets and behaviour involves deep depression at core level, interspersed with lashing out.
One consequence for this girl below was set in motion long before the actual incident. For a start, what on earth was she even doing on her own? Part of the answer appears further down here. She simply had not adjusted to new societal realities. Just as with Iryna on that subway train. No concept of danger whatever. But much "independent, strong woman" about it ... cue disaster in 2025/6.
Or this: