Popular culture refers to ideas, perspectives, and phenomena that are mainstream within a culture, especially Western culture in the 20th-21st centuries due to mass media influence. It is shaped by everyday interactions between people. There is debate around how to define popular culture, as the concept is complex with contradictory meanings. Popular culture is categorized into folk culture, mass culture, dominant culture, and working class culture. While popular culture is sometimes blamed for societal issues, it can also positively influence people. However, popular culture mediums should not be oversimplified as entirely good or bad, as they likely do shape cultural behaviors and values to some extent.