Generation gap in the presidential race?

Democratic contenders defy stereotypes about age and point to cooperation across generations.

Generational divides in America – often marked by misconceptions – have perhaps never been sharper. Baby boomers, the popular narrative goes, think millennials are entitled. Millennials think boomers are selfish. Fingers point, stereotypes abound.

For young adults, college debts have almost tripled in the last decade while Social Security looks unsustainable. The post-2008 gig economy led some to label the last 10 years a stolen decade. Stolen, that is, by seniors.

For older folks, ageism seems on the...