You whites never think straight.

If all white males are eliminated (compliant males sterilized) - that frees up 90% of the world's natural resources and removes restrictions on black male social mobility.

The black male will assume their original natural role as stewards of Creation.

Concepts such as welfare, unemployment etc, false stigmas, disappear alongside white males.

White women become superfluous to requirements and would most likely undergo a screening process to remove undesirables (rebellious, opinionated, selfish or non-compliant).

Remaining white females would likely accept dignified roles in a society based upon compassion, and have absolutely nothing to complain about, save perhaps a necessary segregation from the general black population, which would result in either a mixed population, or (if these women are sterilized and supposing technology exists to halt or reverse the aging process) a service class.

To keep white people alive through any other means (breeding or genetic manipulation) would be dangerous.

Of course it would be a lot less complicated if all white people were removed, but I'm guessing there will be a number of whites (probably shunned females who raise mixed babies) who prove themselves worthy of salvation.