I know more and more kids are being basically raised in daycare. Less parental involvement. Even school teachers are complaining that more of their time is being spent on things that parents should be doing. This could have a lot to do with it. I know I see more kids being left home without any supervision at younger ages, then when a neighbor complains to the parents about something that happened, then parent will then go on about how they can't be there for their kids and we just have to "suck it up". Some people will say that it's the kids in single parent households that are the worst. Well, I do not agree with that. Most of the real brats or the deadly ones that have been in the news come from 2 parent households.
Too many kids are getting too many things at too young of an age and are being allowed to get away with too much way too early. (Yes, I know, I used "too" more often than I should) There was this big thing and a book out by Hillary Clinton (I think) called "It takes a Village". We need to get back to that kind of thing I think. I remember knowing that if a neighbor said that they would let my parents know what went on, that I knew I was in for some trouble. I remember having a neighbor grounding my brother on his front porch until my father got home for use of profanity. My brother was 12 at the time. He was grounded to his room for 2 weeks after having his mouth washed out with soap. My father would never have known if not for this neighbor. Some people think of that as being a meddling person, but it's not really. If you look at a lot of cultures, they all work together when raising well behaved children and responsible teenagers and adults. We need to get back to that.
Just my 2 cents.