> In the 70s people were saying that we needed to commit brutal oppression against a large portion of the world based on geography in order to prevent future catastrophe.

What is this referring to?

Erlich (and others) said that we needed to do the following

* programs of mass sterilization in the third world

* a "triage" program where we partition the third world into "savable" and "unsavable" zones, block all movement between these zones, and expel the unsavable zones from our world order such that they will simply all starve to death.

It was all very very racist.

I kinda think this answers the question as to why these ideas get a pass: they offer a way to be racist and advocate racist eugenics policies without admitting you are racist, even to yourself.

I see racism in the population collapse panic too unfortunately, at least in the popular discourse around it. Overpopulation was always about too many of the “wrong” people while underpopulation is about not enough of the “right” people.

Paging rayiner: I believe his dad was involved in population planning for the Ford Foundation in BD.

In the 70s, under IMF guidance, several governments of 3rd world countries implemented policies of mass sterilization.