The United Nations Fight for Freedom – United States Office of War Information , poster by Leslie Ragan Poster size: 57 x 40.5 cm" poster
The pattern
This still is filed under Civilian war-duty equate.
Define
A civilian act (saving, making, staying quiet) is framed as the same duty as the front.
Mechanism
Moral equate. The small act inherits the gravity of the large one. The ask is ordinary. The meaning is not.
Verdict
We need mass compliance on an unglamorous behavior and can honestly tie it to a shared stake.
Why it works
It uses the sheer volume and momentum of the massed flags to convey overwhelming collective power. The unified forward motion suggests inevitability and global consensus.
Steal this when
You need to demonstrate massive scale, international reach, or overwhelming consensus behind your cause.