Kara Elizabeth Walker (born November 26, 1969) is a contemporary African-American artist known for her exploration of race, stereotypes, gender, and identity throughout American history.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Kara_Walker

Pack-Mules in the Mountains, from the portfolio Harper’s Pictorial History of the Civil War (Annotated) by Kara Walker
2005 / Offset lithograph and screenprint on paper / 53”x39” / Smithsonian American Art Museum, DC

Kara Walker on Artnet: http://www.artnet.com/artists/kara-walker/

Further reading:
https://walkerart.org/collections/artists/kara-walker
https://fineartglobe.com/artists/kara-walkers-take-on-our-troubled-times/
https://www.cincinnatiartmuseum.org/art/exhibitions/kara-walker-cut-to-the-quick/