Baby Boomers... Nothing new there, they've (collectively, not necessarily everyone individually) always thought they were something special.
That, and the kids who were young teens when I was working retail a couple years ago... I'm sure the kids a little older than them and those right behind prob were/are no better. Dear god some of them could be annoying as hell. Those that aren't, well they must be a blessing to their parents and community.
I'm one of the Boomer Generation's kids. Prob the most annoying things I've seen are 1) using their child's accomplishments to try to show off and/or one up their friends (and disappointment if you haven't given them enough material to work with), and 2) this idea that "you have kids, you shouldn't have to do anything around the house." Or maybe that's my mother and her friends specifically... but given that it's her friend's too I kinda figured it was their age group.