Maybe incentivizing is the wrong approach. How about terminating any officer or staff immediately, that uses racial slurs or discriminates in any manner. Zero tolerance for unethical behavior. After the roles have been cleansed Of insensitive people, you are generally left with they types of personalities that are desirable and appropriate. This could mean terminating an entire precinct to achieve the results that are necessary for an ethically-run operation. Put the sensitivity training in the boot-camps, so the officers start on the right footing. Do not graduate any who appear to be insensitive.