Fact-checking journalism has progressed worldwide and has a greater impact on public debate. This article raises a thought focused on the epistemological challenges and dilemmas of fact-checking journalism to achieve the triple objective of this new journalistic genre to be fulfilled: ensure the veracity of the information disseminated on social networks and platforms, address scrutiny of power and transform the information in knowledge assumed by the citizens. Through the analysis of the methodology of Latin American Spanish-speaking fact-checking media, several issues related to the verification, dissemination and reception process are discussed. Likewise, the citizen's role in the fact-checking journalism process is analysed as well as the data dissonance in the two main fact-checking lists (International Fact-Checking Network and the Duke Reporter's Lab).

Fact-checking journalism has progressed worldwide and has a greater impact on public debate. This article raises a thought focused on the epistemological challenges and dilemmas of fact-checking journalism to achieve the triple objective of this new journalistic genre to be fulfilled: ensure the veracity of the information disseminated on social networks and platforms, address scrutiny of power and transform the information in knowledge assumed by the citizens. Through the analysis of the methodology of Latin American Spanish-speaking fact-checking media, several issues related to the verification, dissemination and reception process are discussed. Likewise, the citizen's role in the fact-checking journalism process is analysed as well as the data dissonance in the two main fact-checking lists (International Fact-Checking Network and the Duke Reporter's Lab).

Mis/disinformation and post-truth discourses are part of contemporary public communication. The aim is to identify the politicians' discursive strategies and those who want to discredit them through false or inaccurate content circulating on social networks and other media. In particular, the analysis focuses on the 2022 presidential elections in Colombia. The specific objectives were: to establish the formal characteristics of the false or imprecise messages that refer to or were attributed during the campaign to the candidates Gustavo Petro, from the Pacto Histórico party, and Rodolfo Hernández, from the Movement of Anti-Corruption Governors, determine the semantic orientation of these messages and identify the types of fallacies used in their production. For this purpose, we developed content and sentiment analysis on the messages verified by fact-checkers between January and Ju...