"The historian Ian Kershaw points out that several passages in Mein Kampf are undeniably of a genocidal nature. Hitler wrote "the nationalization of our masses will succeed only when, aside from all the positive struggle for the soul of our people, their international poisoners are exterminated", and he suggested that, "If at the beginning of the war and during the war twelve or fifteen thousand of these Hebrew corrupters of the nation had been subjected to poison gas, such as had to be endured in the field by hundreds of thousands of our very best German workers of all classes and professions, then the sacrifice of millions at the front would not have been in vain."

"The racial laws to which Hitler referred resonate directly with his ideas in Mein Kampf. In the first edition of Mein Kampf, Hitler stated that the destruction of the weak and sick is far more humane than their protection. Apart from this allusion to humane treatment, Hitler saw a purpose in destroying "the weak" in order to provide the proper space and purity for the "strong"."

Note that this was in a book for popular publication, that Hitler "hopes the book will run into many editions, thus enabling him to fulfill his financial obligations and to defray the expenses incurred at the time of his trial". Announcing that when you rise to power, you intend to kill a significant fraction of the population is probably a bit much to expect.

The "temporary curtailment" was not really the first step.