I think this would still work in a cinema. I don’t know what could constitute “enemy propaganda” though.
Which comic book tells this message I'm not sure. How would Superman deal with the trolley problem?
These things were supposed to be for children. They have no control over anything and are supposed to look to the big strong adults to solve all their problems.
But even adults are susceptible. Lately politicians have been marketing themselves as the heroes we need to solve the problems we can't.