HAFIZABAD - The Pakistan Peoples Party workers will observe Black Day on Tuesday (today) here. The PPP District President Malik Fayyaz Ahmad said here while talking to media persons here on Monday. He said that July 5 is the blackest day of the history of Pakistan as on that day a military dictator overthrown a democratically elected government and imposed martial law on the country. He said that military dictators despite their conspiracies failed to eliminate the party and after the martyrdom of Shaheed Zulfikar Ali Bhutto the people of Pakistan voted PPP thrice into power. He said that black day on July 5 will be observed with political enthusiasm.