troll in Italian

(by extension, politics) A person who sows discord, or spreads misinformation or propaganda, in order to promote an agenda as part of an organized political campaign.

(figurative, originally, Internet slang) To post irrelevant or inflammatory statements in an online discussion in an attempt to start a heated argument or to derail a conversation, either for one's personal entertainment or as part of an organized political campaign. [from late 20th c.]