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This article proposes to analyze the judgement of climate movement activists on the Yellow vests based on the results of questionnaire surveys carried out by the Quantité critique collective. It highlights the fact that the perception of the Yellow vests is structured by age and social class. The often positive judgments of minorities from working-class groups, and those of civil servants from education and culture, are opposed to the indifference and hostility of engineers and technicians from the private sector. The article also shows that these social divisions tend to be blurred within the most mobilized groups of protesters in the environmental movement.