Violent disturbances where crowds of people act chaotically and destructively, often during protests or civil unrest.
From Old French 'riote' meaning 'quarrel' or 'confusion.' The word originally described any disorderly dispute, then evolved specifically to mean violent crowd disturbances.
Researchers studying riots found that once a crowd reaches about 40% involvement in violent behavior, it suddenly cascades into chaos—there's an actual psychological tipping point where a protest transforms into a riot.
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