Since 1980, the US government has circulated more than 64 billion pocket-size portraits of a slaveowner, ethnic cleanser, and “Indian killer”. And that’s only a fraction of all the $20 bills printed since President Andrew Jackson’s portrait was first put on them in 1929. The Obama administration attempted to rectify this with a plan to swap out Jackson with abolitionist, Union spy, and Underground Railroad conductor Harriet Tubman.