Crisis actors are people who are used in Department of Homeland Security training exercises for mass casualty attacks. They have been used in real life psyops to create fake news reports designed to further Deep State agendas, typically by being portrayed as "victims" of an atrocity that either did not happen or was not as severe as presented by the mainstream media. They have been used in such "tragedies" as the January 6 Capital protests to generate anti-MAGA movement sentiment.
Alex Jones famously alleged that the Obama administration used crisis actors in the Sandy Hook "shooting" to further its anti-gun agenda.
UK MI6 used crisis actors in the war in Ukraine to bolster allegations against Russia and to force NATO to side with the Maidan regime.