"Starting in the 1970s, advocates for closing mental hospitals argued that because of the availability of new psychotropic drugs, people with mental illness could live among the rest of the population in an unrestrained natural setting."
https://www.dailysignal.com/2018/02/28/closing-mental-institutions-made-us-vulnerable-mass-shootings/
The mental hospitals were closed, and then the internet was given over with no internet bill of rights to organize what was right and wrong to do online.
Every mentally ill patient who was let out of the institutions immigrated their way back into society, the grand majority of them being diagnosed narcissists. The fun thing is narcisissts typically just copy the actions of the group so as not to stand out, but will have outbursts every now and then, hence why the 70's, 80's, and early 90's were not nearly as crazy as what we have today.
But what happened then? The internet. All the descendants of the mentally ill people who were let out of the mental institutions had kids and taught their kids their narcissistic ways, all while it never being called out by psychiatrists because they were "okay" to be reintroduced into society.
When you talk about "millenials", (i'm one of them and woke up) what you're really talking about is a group of children who were given everything through the internet, but not only that, you have the wild card narcissists who started congregating online and realized they could group up online to slander and extort other people for their opinions of the world to be put into action.
Because their tactics are to slander, blackmail and extort others, many people fell for it under the guise of "isn't everyone just as nice as I am? Maybe I am being too selfish!" and slowly but surely most of the entire generation was subverted into an online cultural revolution.
We are living the cultural revolution of China, but this time information travels at the speed of light.