The graphic symbolism of Pompeian caricatures is approached through a semiotically defined, oppositional framework, in which possible adjectives and connotations attached to various physical features are listed. These in turn are grouped either as those associated with power and authority or as those associated with their absence.
Although scholars have often ignored popular culture or characterised it as coarse and vulgar, the caricatures are found to have a sophisticated semiotic system that stood in opposition to erudite upper class painting and served to criticise people in power. Nevertheless, caricatures of slavery as an institution reveals that ordinary people's ethos was affected by social contradictions and thus social bonds were unconsciously reinforced.