Andrew Jackson has a complicated legacy. On the one hand, he was a populist hero and a venerated war general. On the other hand, he enslaved persons, killed thousands of Native Americans, created an economic depression, and killed a man. "Old Hickory" lived a mad life — eventually leading to a presidency where he gave some very questionable orders, said some very unusual things, and took other actions many deem as messed up. Maybe that's why he's referred to by some as "America's worst 'great' president."