This document discusses mass communication and media literacy. It defines key terms like communication, feedback, and gatekeepers. Mass communication involves mediated messages being transmitted to widespread audiences through media like newspapers, television, and the internet. The culture of a society influences and is influenced by the media it consumes. Media literacy is important for understanding and critically analyzing the media's effects on individuals and culture. Conglomerates that own multiple media companies can potentially have too much influence if ownership is highly concentrated.