Over at "Slate," Jillian Keenan elegantly lays out some of the reasons that Andrew Jackson should be yanked off the $20 bill. Her piece begins with a high school history class lesson about the Indian Removal Act and the Trail of Tears:
It was unfathomable that thousands of Native American men, women, and children were forced to march West, sometimes freezing to death or starving because U.S. soldiers wouldn't let them bring extra food or blankets. It was hard to hear that the Choctaw Nation lost up to a third of its population on the death march. It was disorienting to learn that what amounted to ethnic cleaning had come at the insistence of an American president.
Keenan goes on to explain how Jackson opposed paper money and the central banking system. She's even got an awesome suggestion to replace Jackson--but you'll have to read her post to find out!