An initial advocate of democracy and socialism, Mujib rose to the ranks of the Awami League and East Pakistani politics as a charismatic and forceful orator. He became popular for his opposition to the ethnic and institutional discrimination of Bengalis in Pakistan, who comprised the majority of the state's population. At the heightening of sectional tensions, he outlined a six-point autonomy plan and was jailed by the regime of Field Marshal Ayub Khan for treason. Mujib led the Awami League to win the first democratic election of Pakistan in 1970. Despite gaining a majority, the League was not invited by the ruling military junta to form a government. As civil disobedience erupted across East Pakistan, Mujib indirectly announced independence of Bangladesh during a landmark speech on 7 March 1971. On 26 March 1971, the Pakistan Army responded to the mass protests with Operation Searchlight, in which Prime Minister–elect Mujib was arrested and flown to solitary confinement in West Pakistan, while Bengali civilians, students, intellectuals, politicians and military defectors were murdered as part of the 1971 Bangladesh genocide. During Mujib's absence, many Bengalis joined the Mukti Bahini and with help from the Indian Armed Forces, defeated the Pakistan Armed Forces during the Bangladesh Liberation War. After Bangladesh's independence, Mujib was released from Pakistani custody due to international pressure and returned to Dhaka in January 1972 after a short visit to Britain and India.