How does a 9-year-old change the world? The answer is simple -- a child does it the same way an adult does it, with temerity and truth. The hard part is... well, you might have to plot Mutiny at the Merry-Go-Round. Since merry-go-rounds have been deemed dangerous by modern day standards, maybe you're stuck with Sedition at the Slide.
Check out my post on Geezer Guys & Gals The Merry-Go-Round Mutiny