 As Front National ideologue François Duprat put in the 1970s, inspired by the Latin American right of that time, right-populism aims to constitute a "national, social, and popular" ideology.If populism itself is shared by both left and right parties, their premises are indeed different in that right-wing populists perceive society as in a state of decadence, from which "only the healthy common people can free the nation by forming one national class from the different social classes and casting aside the corrupt elites".Methodologically, by co-opting concepts from the left – such as multiculturalism and ethnopluralism, which is espoused by the left as a means of preserving minority ethnic cultures within a pluralistic society – and then jettisoning their non-hierarchical essence, right-wing populists are able to, in the words of sociologist Jens Rydgren, "mobilize on xenophobic and racist public opinions without being stigmatized as racists."