Political party founded in 1967 by Zulfikar Ali Bhutto, emphasizing secularized Islamic principles of social justice. Gradually embraced the Islamization of society due to popular demand. Tried to balance secularist tradition with public demands for Islamization. In power from 1971 until 1979, when it was overthrown by Zia-ul-Haq. Opposed by conservatives and Islamic parties as too radically socialist and un-Islamic. Resurfaced in 1988 as a major opposition party. Its leader, Benazir Bhutto, was elected prime minister in 1988 and 1993. The current leader of the PPP, Asif Ali Zardari (widower of Benazir Bhutto, assassinated in 2007) became president of Pakistan in 2008.