The story
Blend of bread + YouTube, in reference to the 1892 book The Conquest of Bread by Peter Kropotkin, often considered a foundational text of political anarchism. By surface analysis, bread + -Tube.
Etymology from Wiktionary, CC BY-SA 4.0.
BreadTube
Today it means: The community of videobloggers (particularly YouTubers) who tend towards left-wing perspectives. Full definition →