Top lower did once shade smoothly into bottom upper. A solid voting cohort was there. The last of them were the Baby Boomers, who lately wonder what happened to

Top lower did once shade smoothly into bottom upper. A solid voting cohort was there. The last of them were the Baby Boomers, who lately wonder what happened to the rising prosperity they grew up with. That prosperity continued, to a height unimaginable at the time. But their children and now grandchildren get a constantly decreasing share of it.