Culture is a word I haven’t used much when talking about media, which is odd because no better word exists when discussing art and entertainment. We are all consumers of culture. We all give back to culture. Culture is defined by what people choose to consume and what they choose to ignore. It is used to define groups of people who consume a certain type of media that detracts from the mainstream: sub-culture. These are cultures that exist inside the larger cultural body. They are in ways isolated from normal culture but what they consume and create also gives back to the main culture as a whole.
Members of subcultures become blind to the fact that they are part of a subculture. There are a couple of key factors that lead into this kind of thinking. The chief among them is they start spending so much time and energy living in the subculture that they start to believe that everyone else thinks like they do. This happens, especially in the age of the internet, because the deeper they dive into the subculture the more they find and interact with people who think the way they do. This cements them into the subculture, gives them a feeling that they belong, and establishes a world view based around the subculture. Giving people a sense of community is great! But what this breeds is group think; the community becomes an echo chamber because the members of the community are surrounded by the people most likely to agree with them.