Roman holiday

entertainment acquired at the expense of others' suffering, or a spectacle yielding such entertainment

Origin: after the ancient Roman gladiatorial contests

See Roman holiday in American Heritage Dictionary 4

noun

Enjoyment or satisfaction derived from observing the suffering of others.
A violent public spectacle or disturbance in which shame, degradation, or physical harm is intentionally inflicted on one person or group by another.

Origin:

Origin: From the bloody gladiatorial contests staged as entertainment for the ancient Romans

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