Hierarchy within the Demon World

In this episode I found myself drawn to the hierarchical dynamics within the society of demons. The Scourge believes that they are the superior group of demons. They are 'pure bloods'. They represent every group of people, throughout history, who have ever believed themselves to be superior to another group. I found them comparable to the German Nazi's because of their quest to eliminate the 'half bloods' and create a race of 'pure blood' demons. This leaves those, deemed inferior, to live in hiding just as the Jewish people were forced to do during the Nazi invasion. Their 'Hitler style' leader justifies the killing of 'half bloods' by stating that these actions are what "The higher order demands." He sends them forth to finish the job of eliminating the 'half bloods' with the 'beacon of light'. The 'beacon of light' destroys anything with human blood. I found it curious that they call this 'death tool' a 'beacon of light'. A beacon is a guiding light. Its name gives an image of purity and salvation, neither of which is what the 'half bloods' will receive when it detonates. Maybe it represents what The Scourge believes is the light to creating their demon purity and saving them from inevitable annihilation from demon/human mixing . It is a twisted belief, yes, but fear rooted in ignorance creates a powerful emotion and, sometimes, devastating outcome. In this case, of course, evil does not triumph and Doyle is giving the opportunity to atone for his prior inaction.