Sarrasin's historical predecessors

When right wing polemic-politicians like Sarrasin argue that the wrong people (say, low-income migrants) re-procreate, while the right ones (say middle/upper class "Blut & Boden" Germans)don't, they have significant historical predecessors such as, say, the nationalsocialist.

Text reads:
"
This would be the consequence
Qualitative population-decrease by inadequate reproduction of the superior /
This will happen when inferiors have 4 children and superiors 2
"