Josiah Wedgewood's Medallion

Origin
Josiah Wedgewood was an English potter who founded the Wedgewood company and is credited with industrializing the manufacture of pottery. He was also an abolitionist who created a medallion, "Am I Not a Man And a Brother?", in support against the practice of slavery.

Effects
It is against slavery and makes those act out against it. However, unlike Abraham Lincoln's Top Hat, it has kept up with the times, knowing slavery no longer exists. So, it goes out against anything racist, prejudiced and discriminatory, affecting the wearer to act as its agent. If the medallion witnesses any act of discriminatory hate, it can release a wave of action into bystanders and turn them into rioters.