pamphleteering

/P AE0 M F L AH0 T IH1 R IH0 NG/
verb
  1. 1

    To publish and distribute pamphlets as a form of propaganda.

noun
  1. 1

    The printing and distribution of pamphlets, especially as propaganda.

Source: https://en.wiktionary.org/wiki/pamphleteer, https://en.wiktionary.org/wiki/pamphleteering