, ▁do ctors , ▁engine ers , ▁po ets ▁and ▁writers ▁were ▁system atically ▁mass ac red ▁by ▁the ▁Pakistan ▁Army ▁and ▁their ▁local ▁collabor ators , ▁most ▁not ably ▁the ▁alleg ed ▁Islam ist ▁milit ia ▁groups ▁Al - B adr ▁and ▁Al - Sh ams . ▁The ▁largest ▁number ▁of ▁assass in ations ▁took ▁place ▁on ▁ 1 4 ▁December ▁ 1 9 7 1 , ▁only ▁two ▁days ▁before ▁the ▁surrender ▁of ▁the ▁Pakistan ▁Army ▁to ▁the ▁joint ▁forces ▁of ▁the ▁Indian ▁army ▁and ▁Mu kt i ▁b ah ini . ▁ ▁On ▁the ▁night ▁of ▁ 1 4 ▁December ▁ 1 9 7 1 , ▁over ▁ 2 0 0 ▁of ▁East ▁Pakistan ' s ▁intellect uals ▁including ▁profess ors , ▁journal ists , ▁do ctors , ▁artists , ▁engine ers , ▁and ▁writers ▁were ▁rounded ▁up ▁in ▁D h aka . ▁They ▁were ▁taken ▁blind fold ed ▁to ▁tort ure ▁cells ▁in ▁Mir pur , ▁Moh amm ad pur , ▁Nak hal para , ▁Raj ar b agh ▁and ▁other ▁locations ▁in ▁different ▁sections ▁of ▁the ▁city . ▁They ▁were ▁later ▁executed ▁en ▁mas se , ▁most ▁not ably ▁at ▁R ayer baz ar ▁and ▁Mir pur . ▁In ▁memory ▁of ▁the ▁mart y red ▁intellect uals , ▁ 1 4 ▁December ▁is ▁m ourn ed ▁in ▁Bang l adesh ▁as ▁Sh a he ed ▁Buddh ij ib i ▁D ib osh . ▁▁ ▁Even ▁after ▁the ▁official ▁ending ▁of ▁the ▁war ▁on ▁ 1 6 ▁December ,