Juneteenth Becomes the Newest National Holiday

What you should know about it:

https://www.npr.org/2021/06/17/1007315228/juneteenth-what-is-origin-observation

https://www.goodhousekeeping.com/holidays/a32891044/what-is-juneteenth/

Symbols on the flag:

https://www.cnn.com/2021/06/19/us/juneteenth-flag-meaning-explainer-trnd/index.html