You may have seen these videos of synchronized dancing for prison inmates in the Philippians, it's interesting, I wonder if it would work here in America?
The only thing I know of similar to that is Dierks Bentley getting prison inmates to hum the background and keep the beat in place of drums for one of his songs.
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Graffiti outside Latin class.
Sed quis custodiet ipsos custodes?
A juvenal prank.