The purpose of this Master thesis is to increase the knowledge about how public libraries can contribute to fulfil political programmes aimed towards integration. To achieve this we have conducted an evaluative case study about a public library in Sweden and the activities they carried out within the framework of the metropolitan policy programme Storstadssatsningen”. The questions raised consider which the political aims for integration within this programme were, which activities the library did accomplish, what the result in comparison with the politically decided aims was, and what conclusions can possibly be drawn from this? The theoretical framework consists of theories regarding evaluation, political programmes, integration and segregation, and public library-activities. The methods used in the case study are qualitative interviews and document studies. Our evaluative approach is based on Vedung (1998). The result of our case study shows that the aims of the programme at most levels were indistinct and that the library didn't have any clear goals to reach. Hence it is impossible to show any fulfilment of goals. The library accomplished a multitude of activities, which the staff had decided about themselves. Several of the activities promoted multi culture rather than integration. The programme has been successful mainly on an individual level and this is also where the library has been able to influence. Furthermore it is obvious that the overall aim to prevent segregation is nearly impossible to achieve on a local segregated city district-level.