Here we have a bigoted person advocating genocide, arguably one of the most violent acts any species, let alone any ethnic grouping of humans, could ever achieve. For the sake of argument, let us suppose that one ethnic group did manage to kill off all members of a chosen group/set of groups. We'll ignore for the moment the pragmatic reality that, thanks to many centuries of interaction (good AND bad) most peoples are genetic mongrels, with ancestry from 3 or more backgrounds. We'll even ignore the fact that, in many cases, the groups that hate each other most tend to be very closely related, (Semitic peoples as already mentioned, Chinese/Japanese/Korean, French and UK, the list goes on) again, because of centuries of interaction, both good and bad. That makes it practically impossible for anyone to actually accurately target ANY hated group.
sociopathic, genocidal murderers and their heirs will be all that is left
Even IF such a thing were technically feasible or to become so. There are still two really big problems that the hate groups never seem to even realize, let alone admit to anyone.
1) Who decides who is desirable vs undesirable? White supremacists would chose blacks, browns and yellows, pretty much in that order. There are elements in militant ethnic or religious groups who would happily eliminate whites from the world in turn. What you end up with is a MAD situation, with everyone (hopefully!!) being too sane to be the first to pull the trigger and making side deals with others in the room to gang up on the first one who does so.
2) There are many post apocalyptic stories and movies out there which can give us at least a passing notion of what a truly depopulated world would look like. None of the bigoted nutjobs seem to really think that through. At best, some seem to think this means law and order collapse and they get to take what they please at the point of the gun they've been hugging and whispering to. More likely, it means the utter collapse and likely extinction of the human race. ONE PLAGUE wiped out as much as 50% of the human race. We survived because a) People tended not to travel as much or as far/fast as they do today. The disease spread slower than it would today. b) Something like 80% of the population was involved in food production and nobody utterly relied on preserved and/or widely transported foodstuffs. c) The disease struck mainly the poorest and the ones living in the most crowded conditions the hardest. Most monasteries, for example, were almost or completely unscathed. Which also meant that the accumulated knowledge of the human race also survived. (and even if the librarian monk dies, the books are still on the shelves. If our electrical grid goes down permanently, everything stored electronically will be essentially GONE.) Because our civilization is so interconnected and interdependent, what *I* think the result would be:
A) Death tolls easily matching the First, Second and Third pandemics put together. It will happen within weeks, perhaps even days, compared to the months and years of the earlier plagues. That would eliminate 80+% of the human race.
B)There will be warfare as nations blame each other. Warfare that is quite likely to include nuclear weapons. That right there accounts of ~80-90 % of the human race. FOLLOWED BY
C) Wide spread and immediate Great Famine which accounts for 50-60% of who ever is left. FOLLOWED BY
D) Rampant dysentery and other diseases, caused by being surrounded by seemingly endless dead bodies and no access to clean drinking water. (many people in the west don't even know where their water comes from, let alone have the means to get there and extract it without power during a pandemic. FOLLOWED BY
E) A loss of human knowledge and know-how akin to the Viking sacks of the Irish monasteries, but occurring WORLD-WIDE. FOLLOWED BY
F) A drastic crash in world wide climate, perhaps even another Little Ice Age as we had in the medieval period. This may well account for the 5-10% of humanity that is left, huddling and starving in the dark. If the Little Ice Age had any help from Nuclear winter, it could easily be the tipping point to another Snowball Earth which would wipe out 95+% of ALL LIFE on the planet.
no, any sane individual, regardless of race, colour, creed or condition should be utterly terrified of the possibility of ANY wide spread bioweapon.