Slavery was started because of a desire for early settlers to make money. It started with their greed to harvest the tobacco plant and when Native Americans proved to be unable to help they moved on to a different people group.
African Americans are perceived as target in toys and games. This created a subconscious idea that they are sub-human. The user can manipulate or abuse them.
Aunt Jemima sexuality is stripped away. She is viewed as loyal to a fault.