Mistress Dula heard of the things that this guy had done to her friends and she was not ok with it. She told them that they had to collectively humiliate him. So the mistress told them that the best way to do it was to trample and punish him with dirty feet. That is what they did and they made him feel pain on every inch of his body. He dropped his bigoted habits.
Mistress Dula and her slave had longstanding issues that they needed to sort out. The mistress asked him to lie down and she trampled the shit out of him. But to make it worth her while, she had invited her friends to help her do it. They came in their numbers and helped her to trample the shit out of him until he learned not to mess with mistress Dula.