It started when all the kids grew up from the era not long ago where parents were all about making each child feel special, unique, talented, amazing and a hero. They grew up with their parents shielding them from anything that might tonguen then up like the heavy handed anti bullying campaigns like the 8 year old on tv "they teased me because of my glasses and I was bullied". A generation of kids growing up raised by weak, and soft parents catering to them.
So they reached voting and working age raised on the notion they will be protected, they are special, they deserve everything handed to them. So not only did they expect that, but they also thought they deserved everything without working for it. And the country catered to them.
So with no ambition and nothing to work for they got bored with no direction and decided since they were so amazing and great that they would take on political and social issues with no actual knowledge of the real world or insight.
And companies desperate for fresh money catered to them. Politicians desperate for fresh votes catered to them. Companies needing new employees catered to them. And it all fed their ignorance further.
It all started with bush and his no child left behind shit, then it got a bump by Obama, and then fast forward to now the seeds planted have finally bloomed.