Genocide doesn’t work.
There are more Jews, Armenians, and rich people than ever.
Even witches have multiplied. Genocide is supposed to get rid of certain groups, but always fails in practice. You end up spreading the groups everywhere. They run all over the world setting up shops, covens, or mafias.
Genocide is good in theory. A race-less, inequality-less society sounds nice. The real world just isn’t right for it.
Until it’s possible, genocide is wrong.