The middle class was once a symbol of the American dream. It meant financial security and an opportunity for a better future. But that portrait of the American middle class is quite different today. A survey in 2018 found that a third of middle-income adults don’t have as much as $400 to cover an unexpected expense. And while the middle-class lifestyle grows more expensive and uncertain, it’s also moving beyond the reach of younger generations.

“It was at least a secure category,” said Alissa Quart, author of ‘Squeezed: Why Our Families Can’t Afford America,’ [but] there are certain kinds of assumptions around being a middle-class person” that have “shattered” over the past 10 to 15 years.

View the full video from CNBC below.