ople communicate with one another infrequently. An ethnic community in a neighborhood, by contrast, might constitute a strong network, in which participants see and exchange ideas with one another on a daily basis. It may be logical to think that such a strong, localized network would shun the wider society and so be a potential breeding ground for radicalization, so that an antiradicalization plan might seek to weaken it. But according to Tillie, the paradox is that if a strong network is given support, its members will become active participants in society. Thus came the most contentious feature of Cohen’s tenure as mayor of Amsterdam: his decision to give a sympathetic ear even to insular and orthodox Muslim communities. “Drinking tea