Among the highest-ranking military commanders at the Nuremberg trials sat a former elementary school teacher whose weapon was a printing press. Born in Bavaria in 1885, Julius Streicher earned two Iron Crosses in World War I, then radicalized after 1919 into a figure too extreme even for other fringe groups.

This deep dive examines how he built a propaganda empire, joined Hitler's party as member 17, launched his newspaper in 1923, and became the first person convicted by an international tribunal for inciting genocide, establishing that systematic dehumanization is a prerequisite for atrocity.

• How marching in the 1923 Beer Hall Putsch earned him permanent protection
• His use of libel suits and sensationalism as a marketing model
• The children's books depicting marginalized people as poisonous mushrooms
• His  ...