Here's an idea- start holding adults to the exact same standards we hold kids, and then watch how fast policies change:

Co-worker makes racist remarks towards you: "sticks and stones" speech

Co-worker sexually harasses you: "sticks and stones" speech

Co-worker physically assaults you: "sticks and stones" speech, with added punishment if the victim defends himself

And in each case, tell the adult victim how they should be more empathetic to the bully's lot in life.