Spoilers * * *

I should preference this with I haven't consumed the book or the movie. I just watched a couple of videos about the movie. They of course race swapped a few characters. One race swapped character was a man named Peter. In the book he's white in the movie he's black. In the book ending a man named Raymond is the final walker and he continues walking, hallucinating a dark figure he is trying to overtake. In the movie Ray sacrifices himself so Peter can win.

Peter uses his wish from winning to ask for a weapon. He then shoots the major overseeing the walk and walks away. So the race swapped black guy wins and it can be implied began a revolution against the current facist regime. I think the messaging is pretty overt here.