1971 Bangladesh atrocities
In 1970, Pakistan held its first general election.  Before this, the military had limited voters' rights.  The West Pakistanis voted for many different political parties, but most of the East Pakistanis voted for the same political party, called the Awami League.  This meant the East Pakistani candidates would have a majority in Pakistan's assembly.  This East Pakistani political party was led by Sheikh Mujibur Rahman.