My 9 year-old nephew saw this poster and said "It's Abraham Lincoln!", I told him that it was actually Barack Obama but that a lot of people thought of him as Abraham Lincoln-like. An older Chinese American man corrected me when I said that I thought the lettering probably said Barack Obama, he told us it meant chang-ing. It was a meaningful moment made even more so because my nephew is of half African-American descent.
I wish I knew who designed the poster, it's amazing.