The episode was also a musical, with a number of musical sets from the cast throughout. One of the sets was a Schoolhouse Rock style video featuring The Roots that gives a concise history of slavery and how it ended.
"I am a slave in the home of the brave. A product of the triangular trade, please pardon my ways. If I'm nervous or the slightest bit skittish in the presence of the Portuguese, Spanish, Dutch, or British. They kept me in colonial chains. Tell me how to persuade them to chill or to save me and still I'm a slave. I hope and pray that they don't kill me today. I am still just a slave."
If you're not familiar with Schoolhouse Rock, Black Thought is paying homage to the iconic I'm Just a Bill cartoon.