Douglas Brinkley on America at 250: History tells us hoping for unity is not futile

In these fiercely-polarized times, the presidential historian reminds us that Americans' freedom has been tested – and has survived – much worse. "CBS News Sunday Morning" features stories on the arts, music, nature, entertainment, sports, history, science and Americana, and highlights unique human accomplishments and achievements. Check local listings for "CBS News Sunday Morning" broadcast times. Subscribe to the "CBS News Sunday Morning" YouTube channel: https://youtube.com/CBSSundayMorning Get more of "CBS News Sunday Morning": https://cbsnews.com/sunday-morning/ Follow "CBS News Sunday Morning" on Instagram: https://instagram.com/cbssundaymorning/ Like "CBS News Sunday Morning" on Facebook: https://facebook.com/CBSSundayMorning Follow "CBS News Sunday Morning" on Twitter: https://twitter.com/CBSSunday Subscribe to our newsletter: https://cbsnews.com/newsletters/ Download the CBS News app: https://www.cbsnews.com/mobile/ Try Paramount+ free: https://paramountplus.com/?ftag=PPM-05-10aeh8h For video licensing inquiries, contact: [email protected]