The Ministry subjected the four independent newsreel companies to strict censorship. Audiences saw only what the government permitted. In 1940, the Propaganda Ministry nationalized the newsreel industry. Only state-produced newsreels were shown. These newsreels often combined strong visuals and music with heavily biased reporting.
https://exhibitions.ushmm.org/propaganda/1933-1939-dictatorship/the-german-newsreel-industry