It was a spectacular event in terms of media impact and massive scale of urban terrorism. An event that was symbolic of a whole new sort of mode of political violence against the centers of the global economy—the so-called world cities, the world centers of financial, economic, and military power. And an attack orchestrated through means of electronic finance, through appropriating the infrastructures of the city to target the city. So I’m particularly interested in how it’s an event that has been used to underline the vulnerabilities of contemporary urban life.