Rubuta ci gaba don wannan sakin layi - A cikin shekaru ashirin masu zuwa, Green ya yi aiki a duniya, yana shiga cikin ayyukan da ke adawa da wariyar launin fata kuma ya mai da hankali kan ci gaban al'umma. Ta ɗauki matsayin jagoranci a CUSO, tana aiki a matsayin mai tsara yankin ƙungiyar ci gaban ƙasa da ƙasa. A cikin wannan rawar, Green ya goyi bayan ayyukan a gabashin, kudancin, da tsakiyar Afirka da kuma Caribbean. Ta kasance mai kula da CUSO a Grenada har zuwa 1983. An kwashe Green daga tsibirin tsibirin Grenada, bayan da Amurka ta mamaye shi
bayan kisan da aka yi wa Firaminista Maurice Bishop.