 Consider the following example. A city is characterised by very heavy traffic that poses a danger to its pedestrians. The city’s pedestrians have an interest in there being a network of walkways so that they can move around the city in safety. Each pedestrian, as an individual, has an interest in those walkways, but the interest of just one pedestrian is insufficient to create a duty for the city authorities to construct the walkways. However, the shared interest of all pedestrians may well suffice to ground that duty, in which case pedestrians will have a collective right that the authorities should construct and maintain the walkways. The point of this example is not to insist that, in these circumstances, pedestrians would indeed have that right. Rather it is to show that (a) a group might have a right to a good that is intelligible as a good for an independent individual, and (b) a right-holding group need be a group only in virtue of the shared interest that grounds their right. The group need not be institutionalised as a group, nor need it be distinguished by a common ascriptive feature. (In the example given, the fact that the right-sharing individuals are identifiable as “pedestrians” contributes nothing to their having a collective right independently of their interest in being able to walk around the city safely, .)