Gavin Jacobson in New Statesman:
In 1893 Elisabeth Förster-Nietzsche returned to her mother’s adopted home town of Naumburg in Germany. She had been living in Paraguay with her husband, Bernhard Förster, a nationalist and anti-Semite who had founded an Aryan colony to begin “the purification and rebirth of the human race”. Elisabeth’s brother, Friedrich Nietzsche, had condemned her husband’s anti-Semitism and her decision to join him in South America. The experiment failed in any case. Blighted by disease, poor harvests and intercommunal strife, the outpost collapsed in two years. Förster committed suicide in 1889. Around this time, Nietzsche began his final descent into madness and Elisabeth came back to take care of him and his legacy.
Nietzsche’s first book, The Birth of Tragedy, published in 1872 while he was a professor at the University of Basel, received marginal attention. It wasn’t until the 1890s that his writings gained a wide readership across Europe. Elisabeth soon took control of Nietzsche’s literary estate and, little by little, transformed him into an instrument of her fascist designs. She began to rework his notebooks and to clip, cross out and fabricate quotations, so that, in the public imagination, her brother went from an opponent of German nationalism to a lover of the fatherland, from the author of The Antichrist to a follower of the gospel, and from an anti-anti-Semite to a venomous Jew-hater. Before his death in 1900, Nietzsche had asked his sister to ensure that “no priest or anyone else utters falsehoods at my graveside, when I can no longer defend myself”. He could not have foreseen this betrayal by Elisabeth, as she cast him as the lodestar of National Socialism.
More here.