Let it grow

Any guesses at what specifically cracks the case in Dr. Seuss’ The Lorax movie?

The protagonist, a boy who wants to save the world in order to get the girl (which, in my experience, is just about the only reason any young guy does anything proactively), breaks down the city wall, which has been containing his fellow townspeople, with a bulldozer. The crowd is amazed – there IS a larger context, and in light of it, a different path forward is adopted.

And, the hero gets the girl.