This started with the series of books people were writing on "How to raise your children"I believe that a much larger percentage of children in the past learned a much better sense of consequence for their actions. That seems to have lessened since the "spare the rod" movement began.
The underlying theme seemed to be they were your friends. Our kids are not our friends they are our children. We are responsible for teaching them all that we can about the ways of the world and becoming a part of it. So much has been lost as to how we parent. So much. It is now come to a head.