Removing the population type from the slot

Implementing the very unpopular 'Racial Purity' policy, Martial Law, or similar. The Horatio can use the Genetic Alteration Lab to beautify some 'lesser' race, so perhaps brutal purging should be an option for the other Factions? I think if this is implemented, the detrimental impacts should go beyond the player's empire and also impact their standing with other non-militarist Factions. The negative approval should threaten immediate rebellion in systems with that population type.

Implementing the very unpopular 'Racial Purity' policy, Martial Law, or similar. The Horatio can use the Genetic Alteration Lab to beautify some 'lesser' race

Theese methods would provide the nessesary result if player wants to get rid of minor factions, but now the player has no way kill some of the starting population 

What about the production queue item 'exotic rations' (or some name like that)?  This offers a percent chance of removing the original pop, converting it to manpower.  I like that we can't target the removal of a pop of specific race right now, tho I suppose it may not be realistic, since some governments have made it a mission to remove a particular race from their domain.

I like the idea, but it should definitely be balanced by steep negatives; unless, of course, you've got the appropriate government installed. For some reason, I'm thinking a Theocracy would be pretty okay with this.