The book details Hitler's childhood, the "betrayal" of Germany in World War I, the desire for revenge against France, the need for lebensraum for the German people, and the means by which the National Socialist party can gain power.
The few outside the Nazi party who read it dismissed it as nonsense, not believing that anyone could--or would--carry out its radical, terrorist programs. As Hitler and the Nazis gained power, first party members and then the general public were pressured to buy the book. By the time Hitler became chancellor of the Third Reich in 1933, the book stood atop the German bestseller lists.
As an Amazon reader has pointed out, "If you want to learn about why the Holocaust happened, you can't avoid reading the words of the man who was most responsible for it happening." Mein Kampf, therefore, must be read as a reminder that evil can all too easily grow.