Collective term, for people who crowd around something like an idea, or activity because a key influencer has endorsed it. It often takes place in the white collar workplaces and school playgrounds.

Swarmballing is the activity of crowding either physically or metaphorically around the activity or idea in an attempt to be associated with it.

Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy