The choice of the rainbow in the form of a flag harkens back to the rainbow as a symbol of biblical promise. In the German Peasants' War of the 16th century, the rainbow flag together with the peasants' boot ('Bundschuh') was used as the sign of a new era, of hope and of social change.
The Thomas Müntzer statue in the German town of Stolberg also shows him holding a rainbow flag in his hand. He is often portrayed with a rainbow flag in his hand.
The reformer Thomas Müntzer (1489–1525) connected socially revolutionary claims with his preaching of the gospel. Rainbow flags in various cultures and movements Reformation