Banksy does have African-American clip art available online at Shutterstock; however, the images are not free in most cases and require a subscription to the site. No one is sure when new images will appear or on what sites they will appear because Banksy remains anonymous, as of 2015.
Banksy, who has been anonymous his whole career, is a street artist thought to have been born in England around 1974. He is most known for creating art graffiti that speaks to political themes. He first started creating work in the 1990s and combines images with catchy slogans that cover issues such as apes, policemen, children, members of the royal family, hypocrisy, war critiques, capitalism and greed. These subjects may or may not include African American characters.