Need Advice, how do we influence your leadership when they have a strong cultural bias to a particular group of ethnicity?

Thanks

If they doing so! , then it is not a leadership 

since a leadership must be neutral, and bias only for organization's culture 

thank you for the invite waiting to hear more answeres 

There is only one effective way I know of. Prove them wrong via showing them that you are beyond ethnic stereotypes. Show them that you are among the exceptions. If they generalize your ethnicity then they also believe in the universal rule that there are always exceptions. Be the exceptions. After they realize that then you can start being the standard. Turn their beliefs upside down with facts. Let themselves know there are wrong with their assumptions.