The thesis deals with the theory of populism, the attempts to define it and the social conditions and the consequences associated with it. It deals with populism from the point of view of populism as an ideology and political style, the emphasis is on the elements that create it. These include the concept of the people as a homogeneous whole, an exclusionary policy, a policy of fear and a tendency to retraditionalisation or repatriarchalization of society. Populism is a construct of time, social and political conditions, so it cannot be treated in exactly the same way in every period. It manifests itself in the aspirations for the rule of a people that resists the authorities or the elite and is often associated with anti-intellectualism, anti-genderism, nationalism, nativism, and the Roman Catholic Church. The mobilization of the people against the elite is often triggered by the negative or contradictory arguments of (extreme) right-wing populist parties, who, through their rhetoric, successfully create gaps between people and achieve a "divide and rule" style of politics, which often results in the idea of class struggle being suppressed. An important element of populism and right-wing populist parties, as the bearer of it, is fake news and public address through social networks.