Very simple:
Eliminate all health & welfare support;
Undermine all judiciary interference;
Replace all facets of Education with unresistable Brainwashing;
Eliminate the population in subtle stages: first the "illegal"s, then racial selection, then those who don't fit the determined "norm", basically& eventually anyone who seems resistant to the "program"; mass extermination will reduce remaining resistance, easing the pressure of "too many people to control"; then replacing the population with docile slaves fathered by the mindlessly deformed predators, grooming & controlling the freaks' growth with only what the Program allows: voila! The "master race"! (aka Project 2025)
On the other hand, this particular world system we have been born into, is simply doing what world systems do. & the life-forms it's hosting are behaving quite naturally, assuring this world-system's perseverance...
Though not necessarily "their own"!