The guns are for when the pen doesn’t work: https://en.wikipedia.org/wiki/Bangladesh_Liberation_War

“The situation reached a climax in 1970, when the Bangladesh Awami League, the largest East Pakistani political party, led by Sheikh Mujibur Rahman, won a landslide victory in the national elections. The party won 167 of the 169 seats allotted to East Pakistan, and thus a majority of the 313 seats in the National Assembly. This gave the Awami League the constitutional right to form a government. However, Zulfikar Ali Bhutto (a former Foreign Minister), the leader of the Pakistan People's Party, refused to allow Rahman to become the Prime Minister of Pakistan.”