The centenary of the French presence in Algeria 1930 was commemorated in France through a variety of events and the production of posters glorifying France civilising mission in Algeria, notably the modernisation of the agricultural sector. On the other hand, the French Communist Party (PCF) and its affiliated union (CGTU) following the III International’ s anti-colonialism, insisted on colonial and capitalist exploitation of Algeria. The two posters included here allow to visualise such contrasting arguments