Kids aren't political, but around 10 years old, they are beginning to develop the moral grounding that might later, in their teens, develop into their first real political perspectives.
I like the idea of young readers using my stories as a sort of moral gym, where they can flex and develop their newly developed moral muscle.
I want to help children develop strengths that allow them to feel they don't have to push things away mentally... If we 'cotton-ball' kids, it produces adults who are too scared to think for themselves and are easily manipulated.