Your choice of topics continues to amuse me . . . .
As you appear to be sincere regarding this topic (one can never tell with you FK), here are two excellent books to read. After Hitler, any notion of controlling the “quality” of the population is taboo in this era of political correctness. Previous to him however, as late as the 1920s, your line of thought would have been well accepted as sterilization was really ramping up into the tens of thousands.