Yet the society seemed as divided as ever. The borders between Catholic and Protestant neighbourhoods were still inscribed in the concertina wire and steel of the so-called peace walls that vein the city, like fissures in a block of marble. In fact, there were more peace walls now than there had ever been at the height of the Troubles. These towering structures maintained some degree of calm by physically separating the city’s populations, as if they were animals in a zoo.

