It really is the same as the Nazis - once all the people identified as being the problem with how things are become known and killed, then the correct society of people will live rightly happy ever after - even get to take over the homes and 'stuff' of the "wicked".
Everybody who dissents, who doesn't tow the line (or isn't willing to work on the front line!), even people who don't look the part, and those who happen to misfortunate enough to be children of "the wicked" - are all up for extermination.
Then the right society, led (without question) by the proper and 'magically' appointed deserving leaders will walk with their heads high in their earthly paradise.