The research studies the moral foundations related to the support or rejection of the Chilean Student Movement MECh, during the manifestations of 2011 (N=170). According to the factorial analysis - exploratory and confirmatory-, the foundations of Justice/cheating, harm/ care, authority/subversion, and sanctity/degradation behaved consistently with the theory; but loyalty/betrayal was divided in two values: patriotism and loyalty. justice/cheating and harm/care were associated with the political left and the support to the movement. Patriotism, authority/ subversion, and sanctity/degradation were associated with the right and the rejection to the movement. A structural equation model reveals that harm/care was directly related to the support to movement; while justice/ cheating and authority/subversion was mediated by political orientation.