Rebel As One

In Rethinking France’s Last Revolution we read a section that talked a lot about transnational cooperation between students. On 238 we are told when a popular German revolutionary figure named Daniel Cohn-Bendit was called an “undesirable alien” and banned from France. As a result students in the streets cried out “We are all undesirables! We are all foreigners! We are aliens!” My question is, what are the benefits of having a protest movement with strong transnational ties like the ones between Germany and France seen here?