Hubris is all about the masses being supportive of movements and funding for things that they do not understand.
As the young Reaper in the game, you are trying to liberate the souls held captive in purgatory by the Four Horsemen of the Apocalypse, unknowingly undoing the good that the Horsemen have done for the world in their dormancy. You end up finding out that you've freed the souls of the most heinous criminals that the world has ever seen...enabling them to inhabit other bodies, and commit the same crimes again.
People in the world are so ready to jump on bandwagons and support causes they do not understand blindly. This is just a fun embodiment of that issue.