Fallacy of claiming the majority is always correct
In argumentation theory, an argumentum ad populum (Latin for 'appeal to the people') is a fallacious argument which is based on claiming a truth or affirming something is good or correct because many people think so. Alternative names. Other names for the fallacy include: . Description. Argumentum ad populum is a type of informal fallacy, specifically a fallacy of relevance, and is similar to an argument from authority (argumentum ad verecundiam).
https://en.wikipedia.org/wiki/Argumentum_ad_populum