If a liberal were to rewrite the the Book of Esther, he or she would craft a scenario something like this:
In Haman’s culture, it is expected that he be bowed down to. By failing to do so, Mordechai demonstrates contempt for Haman’s culture which sends Haman into a state of clinical depression. Realizing that Mordechai’s mistreatment of him is but a symptom of the historical Jewish oppression of the Amalekites, Haman decides on a course of action to liberate his people. Mordechai learns of this, but rather than empathizing with Haman and trying to atone for the ways in which he offended him, he and Esther hatch a devious plan that brings down Haman and results in a brutal massacre of his people.
The name Purim comes from the lots that Haman cast. For the modern liberal, morality is not a matter of absolute truth but of casting lots. Nothing is inherently right or wrong – life is just one big moral lottery. In such an upside-down worldview, the Hamans are the victims and the Mordechais are the oppressors.