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In page Protests of 1968:

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In November 1968, mass student movement erupted in Pakistan against military dictatorship of Ayub Khan (President of Pakistan). The movement was later joined by workers, lawyers, white-collar employees, prostitutes, and other social layers.[1] Unprecedented class solidarity was displayed and the prejudices of religion, sex, ethnicity, race, nationality, clan or tribe evaporated in the red heat of revolutionary struggle.[2] In 1968 at the height of the movement against him, young protesters in Karachi and Lahore began describing him as a dog (Ayub Khan Kutta!). Troops opened fire, killing dozens and injuring hundreds of students and workers.[3] In March 1969, Ayub khan resigned and handed power to Army chief Yahya Khan.[4]