"Mein Kampf" is a book written by Adolf Hitler during his imprisonment in the 1920s. It outlines his political ideology and future plans for Germany, including his views on nationalism, anti-Semitism, and the concept of a pure Aryan race. The book combines autobiographical elements with a manifesto for the Nazi Party. Published in two volumes, "Mein Kampf" became a foundational text for Nazi ideology and played a significant role in shaping the policies of the regime. Its ideas contributed to the rise of totalitarianism in Germany and the events leading up to World War II and the Holocaust.