Well the diversity divide is a real thing. If it happened organically AND LEGALLY, people may have integrated over time. Instead we have horrible leaders that are forcing mass migrations with no vetting process and watching their countries and continent burn to the ground. All in the name of money from the Middle East and the power they will gain from minorities. They will continue to cover up atrocities while appealing to the migrants, SJWs and generally non-red-pilled folk. So while current leaders of the western world do not advocate exterminating (well maybe non-verbally exterminating whites) or forcing certain peoples to leave their countries, yes they are going against the idea that a homogeneous people/culture/country will be most united.