What is the significance of the book The Word Shaker in The Book Thief?

"The Word Shaker" is the second of two stories given by Max to Liesel and reproduced in the novel. It is a simple allegory for Nazi Germany and the power of words and compassion. Hitler's rhetorical style is likened to a mother who scolds her son, damaging his feelings, then speaks to softly to him, perking him up. He decides he can control people through words and conquer the world without having to fire a gun. He grows a forest of propaganda, hypnotizes people with his words, and hires them to maintain the forest and propagandize for him. The girl, who represents Liesel, knows the power of words as well as Hitler. She starts off as a word shaker, but her love for her persecuted friend causes her to plant an impenetrable tree that grows miles high, much higher than any of Hitler's trees. Only when her friend arrives does she finally climb down, allowing the tree to fall and destroy a chunk of Hitler's forest. Although the tree does not destroy the entire forest, it carves a new path through it, and others follow the man and girl as they walk together down the horizontal trunk.

"A small, skinny girl is the best word shaker of her region because she knew how powerless a person could be" without words."