The main fields involved in mass communication are advertising, broadcasting, journalism and public relations. Advertising is a method of communicating with consumers on a product or service by defining the target demographic and reaching out to them with a well-designed ad campaign. Broadcasting is a type of communication that employs video and audio content across several platforms. Journalism focuses on collecting and distributing information to the general public via newspapers, magazines, websites or TV. Public relations refers to the strategic communication between an organization and the public and usually involves cultivating a positive reputation for the organization or individual.