term began used also refer ''propaganda'' secular activities ref name diggs brown p term began taking pejorative negative connotation mid th century used political sphere ref name diggs brown p definition propaganda conceptualized form influence designed build social consensus th century term propaganda emerged along rise mass media including newspapers radio researchers began studying effects media used suggestion theory explain people could influenced emotionally resonant persuasive messages harold lasswell provided broad definition
Applied science Journalism, media studies and communication Communication studies Propaganda