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The introduction of biotechnology is part of a global process of structural change in agriculture characterized by an increased integration of world agriculture with high corporate control. However, as the legal competence to allow the planting and trade of genetically modified (GM) crops commonly lies at the level of the nation state, this remains strategic in the politics of GM crops, both for actors promoting the technology and for social movements struggling against it. This paper illustrates this argument with an analysis of the struggles over GM crops in Brazil. It shows how the implementation of a food regime based on biotechnology, corporate control and neoliberal globalism depended on the state and was a contested process.

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This review provides an overview of social research on genetically modified crops (GM crops), also known as genetically modified organisms (GMOs). Academic inquiry on the social disputes over the future of agriculture biotechnology has multiplied since the mid-1990s, when the first seeds were approved for market commercialization. This essay identifies and describes five prominent analytical approaches to explain public controversies over GMOs: the political economy of food and agriculture, social studies on science, democracy theory, research on corporations and hegemony, and social movement and peasant studies. This overview concludes by arguing that these different strains, although each privileging one analytical dimension and one level of analysis, converge in (i) the definition of the relevant explanatory factors, (ii) in the identification of the various levels of analysisglobal, transnational, national and localinvolved in the issue and (iii) in the prognostic that social disputes over GMOs are likely to remain a topic of public and scholar interest in the near future.

What does the diversity of social movements and food initiatives tell us about processes of social change? I argue that they offer a productive analytical lens to observe social change because they identify injustices and dynamics of inequalities in the food system and are actively engaged in transforming these. Alternative local food initiatives react to the environmental impacts of globalized food relations; food sovereignty movements highlight class inequalities and power asymmetries in the food system that affect people’s rights to culturally appropriate foodways; food justice movements denounce institutional racism; feminist movements fight persistent gender inequalities from food production to consumption; vegan movements defend animal rights. These are often mapped onto different world regions, with food justice movements more present in the US; food sovereignty movements louder in the Global South; feminist food movements more active in Latin America; and local food movements commonly in the Global North. This article brings together diverse strands of activism and research on social inequalities related to food under the conceptual umbrella of food inequalities. In addition to concept building, it contributes to a sociology of food studies by mapping the geopolitics of knowledge about social change behind the growing mobilization around food issues.

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