"Few and far between incidences" as you state is a patently false premise.
.Is this entire thread a reaction to re-reported news of Canadian catholic church re-education schools ,and the current suits involving child sexual abuse?If so, I would like to point out these "re-education" camps operated into the 1960s.If not, feel free to post your "feelings", but dont expect me to respect your opinion as factually based or reasoned.
And unlike you, and the author, I'm not pulling numbers out of my behind. If there were 50 million inhabitants in the Americas before Columbus ( see Ubelaker DISEASE AND DEMOGRAPHY IN THE AMERICAS, 1992), then killing them all four times over would be quite a feat. Instead, its obviously a fantasy.
For a discussion of the lower and upper bounds, see R.J. Rummel's book Death by Government, chapter 3.