Re-defining racism to mean structural racism and structural racism only is commandism, not tailism:
Commandism is wrong in any type of work, because in overstepping the level of political consciousness of the masses and violating the principle of voluntary mass action it reflects the disease of impetuosity. Our comrades must not assume that everything they themselves understand is understood by the masses. Whether the masses understand it and are ready to take action can be discovered only by going into their midst and making investigations.
If you "make investigations," you'll find that most people define racism as something like "prejudice or hate based on skin color." They would say, for instance, that a black American manager who gives their white employees all the shit assignments is racist in a similar way to a white manager who gives black employees shit assignments, even though the U.S. is overwhelmingly racist against black people.