John Heartfield was well-educated and had an extraordinary visual memory. Much of Heartfield’s political art referenced historical events or reflected earlier works of other artist.
It’s widely accepted that this piece is a reference to a remark by the scientist, Galileo, who was persecuted for his theory that the earth revolved around the sun. When he was released from the Inquisition, Galileo stomped on the ground and said, “And yet it moves.”
Examine the movement lines around the globe. Despite Hitler’s insane vision of world domination, Heartfield visually demonstrates the world is still turning.