Abstract
In front of deterritorialisation / reterritorialisation process one which characterize the globalization, we try to dread the elements of continuance and break which connect among them the Forums of Porto Alegre and Genoa; these two big mobilizations of citizens of world constitute, indeed, the most relevant repository in a debate on the city. By tempting these comparisons, we build an approach of the new cycle of internationalist fights which puts production and constitution of urbanterritories as main stakes in the future developments of the movement