The mass media are diversified media technologies that are intended to reach a large audience by mass communication. The technologies through which this communication takes place varies. Broadcast media such as radio, recorded music, film and television transmit their information electronically. Print media use a physical object such as a newspaper, book, pamphlet or comics, to distribute their information. Outdoor media is a form of mass media that comprises billboards, signs or placards placed inside and outside of commercial buildings, sports stadiums, shops and buses. Other outdoor media include flying billboards (signs in tow of airplanes), blimps, and skywriting. Public speaking and event organising can also be considered as forms of mass media. The digital media comprises both Internet and mobile mass communication. Internet media provides many mass media services, such as email, websites, blogs, and internet based radio and television. Many other mass media outlets have a presence on the web, by such things as having TV ads that link to a website, or distributing a QR Code in print or outdoor media to direct a mobile user to a website. In this way, they can utilise the easy accessibility that the Internet has, and the outreach that Internet affords, as information can easily be broadcast to many different regions of the world simultaneously and cost-efficiently.
Social movements are a type of group action. They are large, sometimes informal, groupings of individuals or organizations which focus on specific political or social issues. In other words, they carry out, resist or undo a social change.
Modern Western social movements became possible through education (the wider dissemination of literature), and increased mobility of labor due to the industrialization and urbanization of 19th century societies. It is sometimes argued that the freedom of expression, education and relative economic independence prevalent in the modern Western culture are responsible for the unprecedented number and scope of various contemporary social movements. However, others point out that many of the social movements of the last hundred years grew up, like the Mau Mau in Kenya, to oppose Western colonialism. Either way, social movements have been and continued to be closely connected with democratic political systems. Occasionally, social movements have been involved in democratizing nations, but more often they have flourished after democratization. Over the past 200 years, they have become part of a popular and global expression of dissent.