The agricultural strike of the year 2013 in Colombia threatens a peasant mobilization of wide national and international visibility. In the objectives of social mobilization, one of the most relevant is to build and consolidate political identity. It is also clear that, for arise social mobilizations, there must be a void expressed in an identity that claims to be recognized and that, in the mobilization, there is a meeting for a multiplicity of individual identities. But there are no inferences if those who mobilize, have an identity burden that allows them to become a political subject, or if that burden is the same at all levels of mobilization. Does social mobilization entail the construction of a political identity, with the ability to participate and influence more effectively in the destinies of the communities that venture into that exercise? The present work intends to understand the process of construction of political identities in the peasant social mobilization in the Department of Cundinamarca, from its action in the Agricultural Park of the year 2013. This since it is a department with a large peasant population, sociologically diverse, with a strategic proximity to the Capital and where important representatives of the peasant movement were visualized. In this way, based on a characterization of the social mobilization involved in that strike, it is going to be look an approach to the categories that allow validating the media, participatory, ethical and evaluative expressions that identify the political identity of the Cundinamarques peasant movement.