I throw these hateful, cruel and inauspicious people, the vilest in the world, into the demonic wombs repeatedly.
Why should there be evil in the world and why should evil-mongers grow strong? What is the law in creation about this?
The world any time is a collection of dvandvas, pairs of opposites. Good and virtue are thus juxtaposed with bad and vice to form the full societal structure. So, evil-mongers will be there, along with virtue-lovers. What happens to each is the point to be known and evaluated. Krishna says evil-mongers, when allowed to thrive, will surely muster akin minds. And together they will meet their plight.
Proponents of evil will be allowed to grow, but led to evil wombs again and again, as that is what the wicked and mischievous deserve.
As they do what they relish, Nature too acts in its ways. Spiritual laws relating to the inner realm are even more relentless. Every act brings its destined outcome, ensuring the necessary balance and harmony!