Heinrich von Treitschke
Heinrich von Treitschke (September 15, 1834 – April 28, 1896) was a German historian, political writer, member of the Reichstag, and German nationalist. He supported German unification by Prussia, German colonialism, and monarchy. He was critical of various perceived threats to Germany, such as liberalism, democracy, Jews, Great Britain, and the Catholic Church.
Leftist Wikipedia makes various dubious claims, such as Treitschke being a social Darwinist, who supported exterminations and who inspired atrocities by National Socialist Germany, despite Treitschke supporting Jewish assimilation.