The inclusion of Andrew Jackson on the $20 bill is nonsensical at best, ironic, and shameful at worst.
Jackson was a proud racist, an "exterminator" of Native Americans, and detested any ethnic groups other than his own caucasian background. Jackson was also a wealthy slaveholder, and swapping his smarmy mug for Martin Luther King Jr. would be a proper way to continue the fight for civil rights.
Futher, Jackson protested the creation of a National bank and discouraged Americans from using paper money. He is also the Father of the National Debt.
MLK Jr. needs more than a memorial to be remembered by. The continued fight for equality must permeate our lives every day to prevent apathy and this is the perfect way to see that through.