MC is a process by which a message from one place reaches a large number of people in many different places. This is different from the usual face-to-face communication in a small meeting, classroom, or boardroom. MC is not possible in the reverse direction, i.e. from receiver to source. Communication technology has grown tremendously during the 20th century, leading to many mind-boggling advancements in this field. The invention of the computer and, later, the Internet have so revolutionized the role of communication in modern life that even a schoolchild of his current age feels disoriented if he is made to live in an environment far from television and the Internet. The possibility of reverse communication – from receiver to sender – is now possible thanks to technological advances. There are three basic means or media of mass communication. These are...a. through the printed word or image, in the form of newspapers, books, magazines and advertisingb. through sound – radio, tape recordings and discs including audio CDs and cassettesc. through a combination of sound and image, as in television, DVDs, CDs, computers and the Internet. The medium that has practically exploded in the world is television. Computers and the Internet have contributed to the popularity and reach of television. Such has been the use of the Internet that it is beginning to eclipse printed newspapers, books and magazines. Even cassette tapes, a product of new age technology, have become obsolete. CDs are replacing DVDs and technology continues to improve. Traditional letters, circulars, documents and posters will disappear due to the use of the Internet and have given birth to e-mails. Middle of paper, society and government must control them. Political persuasion through captive television and newspapers has not really succeeded in converting people with different opinions to the side of their masters. Studies by noted social scientists have shown that the aggressive propagation of a certain political opinion often leads viewers of others to cling to their views. This is why Fox News can't really convert Democrats to the Republican side. Propaganda from interested groups is not necessarily corrupting in nature. For example, advertisements on Indian television highlighting the importance of girls' education or nutrition for a pregnant woman convey very relevant and harmless messages. In developing countries we often see advertisements against tobacco and drinking. Prejudices in Indian society can be overcome through mass communication.