While the National Museum of African American History and Culture is under construction, the National Museum of American History has a dedicated space for exhibits on the African-American experience. I went to see Ain’t Nothing Like the Real Thing: How the Apollo Theater Shaped American Entertainment, which was a great, if small, exhibit with a good balance of video, music, and artifacts. I didn't know for example the many famous entertainers at the Apollo included Willie Nelson. Of course, it's all about the music, and the museum did a good job of displaying several screens that showed videos demonstrating acts from different periods in the theater's history.
There are already white tents set up on the National Mall in preparation for the annual Folklife Festival. This year's themes include Mexico and Asian-Pacific Americans so there's plenty to look forward too, including a local rondalla group.