Last year on Juneteenth, the country was in the middle of a sweeping protest movement sparked by the murder of George Floyd. This year, President Biden signed legislation marking this historic day as a national holiday. On today’s CNN Political Briefing, Brandon Tensley explains this history behind Juneteenth, what else has changed since last year’s racial reckoning, and what progress still needs to be made.  To learn more about how CNN protects listener privacy, visit cnn.com/privacy