Rubuta ci gaba ga wannan sakin layi - Bayan juyin mulkin Burma na 1962
Mahn Nyein Maung ya shiga cikin harkar siyasa ta karkashin kasa. An kama shi a Yuli 1967 kuma aka tsare shi a tsibirin Coco. Ya tsere a shekara ta 1970. An sake kama shi kuma aka daure shi har zuwa Afrilu 1973, a karkashin babban afuwa. A lokacin da yake kurkuku, ya zama sananne ga Mahn Aung Kyi, sakataren kungiyar All Burma Karen Organization, wanda zai zama malamin siyasa.