The document discusses the role of media in Pakistan through history. It describes how media evolved in Pakistan during different eras - the establishment of Pakistan Television Corporation under Ayub Khan in 1964, the introduction of Islamization policies and censorship under Zia-ul-Haq, and the establishment of the Pakistan Electronic Media Regulatory Authority under Pervez Musharraf in 2002. The document also outlines the main purposes of media as entertaining, advertising, and informing the public. It notes both the positive role of media in informing people as well as some negative impacts like sensationalism, exaggeration, and damaging Pakistan's national image.