Rainbow flag
The  rainbow flag is a multi-colored flag consisting of stripes in the colors of the rainbow that is displayed in many cultures around the world as a sign of diversity and inclusiveness. The German pastor Thomas Müntzer used a rainbow flag as a symbol of solidarity as early as the German Peasants' War of the 16th century. It is common as a symbol of the Peace movement, first used this way in a peace march in Italy in 1961.