After the imposing of martial law by the bloodless 5 July 1977 Operation Fair Play coup by the Army Chief, General Muhammad Zia-ul-Haq, Khan began opposing the Zia administration and called for support for restoring democracy. On television interviews with news channels, Khan strongly defended his letter as according to him, "nowhere in the letter had he asked for the military to take over", and he had written it in response to a news story he read in which an Army Major had shot a civilian showing him the "V sign".