I think it's unfair to blame a single group as there are many factors at play it seems, however I definitely feel the softening of discipline in schools and parenting in the 90s has had a predictably net negative effect on society as a whole.This has been building for years, nobody is allowed to discipline their children anymore because of the do-gooders saying that any child who is smacked will grow up to be a psychopathic murderer and that has raised a generation of breeders who can't/won't take responsibility for their darling little children who are let loose to just behave how ever they want, the liberals have also diluted the police authority to a point where they cannot do their jobs and sentencing is more like a wheel of fortune gameshow.
The rest since then has just added fuel to the fire.