Abstract
This paper aims to demonstrate that cosmopolitanism should be understood as a transnational mode of practice, whereby actors construct bonds of mutual commitment and reciprocity across borders through public discourse and sociopolitical struggle. This practice oriented perspective allows us to question three of the main assumptions imbedded within most frameworks theorizing global solidarity, namely cultural homogenization, political fragmentation, and social thinness. To illustrate my argument, I draw upon examples taken from the alternative globalization movement.