Public communication becomes mass communication when it is transmitted to many people through print or electronic media. Print media such as newspapers and magazines continue to be an important channel for mass communication, although they have suffered much in the past decade due in part to the rise of electronic media.
Mass communication wasn't able to be accessed easily at one-point in time. Now because of social media and the internet pretty much anyone can gain a platform and say almost anything they want. Journalists at one point were one of the biggest forms of mass communication, now newspapers are hardly read, and articles are read by the niche group they're written for. Magazines are rarely read for anything other than gossip. Mass communication is everywhere. The FBI has a twitter account, local police departments have Facebook pages. Mass communication is everywhere amber alerts and extreme weather announcements are a few forms. mass communication is everywhere "Television, websites, blogs, and social media are mass communication channels that you probably engage with regularly. Radio, podcasts, and books are other examples of mass media. The technology required to send mass communication messages distinguishes it from the other forms of communication."