
thumb|Riot police kettling protesters at the Camp for Climate Action#Camp in the City 2009|Camp for Climate action, part of the [[2009 G20 London summit protests]] thumb|Police kettling protesters at the Opernring in Vienna, COVID-19 pandemic in Austria#Prevention measures|part of the protest against coronavirus restrictions
thumb|Riot police kettling protesters at the Camp for Climate Action#Camp in the City 2009|Camp for Climate action, part of the [[2009 G20 London summit protests]] thumb|Police kettling protesters at the Opernring in Vienna, COVID-19 pandemic in Austria#Prevention measures|part of the protest against coronavirus restrictions
Kettling (also known as containment or corralling) is a police tactic for controlling large crowds during demonstrations or protests. It involves the formation of large cordons of police officers who then move to contain a crowd within a limited area. Protesters either leave through an exit controlled by the police, leave through an uncontrolled gap in the cordons, or are contained, prevented from leaving, and arrested.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).