Rankism
Rankism = the abuse of the weak by the strong.
"By analogy with abuses based on race and gender, abuse based on rank is given the name rankism. Once you have a name for it, you see rankism at the heart of many infringements of human rights, far away or close to home. Rankism is the root cause of indignity, injustice, and unfairness. Choosing the term rankism, places the goal of universal human dignity in the context of contemporary movements for civil rights. Reexamining racism, sexism, and ageism as examples of rankism breathes new life into the movements opposing them. Identifying rankism in all its guises and overcoming it is democracy's next step." (http://www.breakingranks.net/rankism.html)
The concept Rankism has been coined by Robert Fuller, a past Professor of Physics at Columbia and President of Oberlin College.