© Antipode Foundation. Internationalism of the subaltern classes has a long and tortuous history and different patterns of space and scale management. To think of contemporary social movements, internationalism involves analyzing how different spatial-geographical levels of resistance are interrelated. Globalization has led to a mutation in the spatial and temporal conditions of political activity and collective protest and thus for internationalist activity. The concept used by Bensaïd of "sliding scale of spaces" seems particularly adequate to deal with the changing and complex geographies of capitalist globalization. Though all scales are not equivalent, internationalism requires the capacity to act in all of them and taking into account this plurality of spaces and their mutual influence. Managing the sliding scale of spaces is then a key strategic element of contemporary internationalism.