Rioting spread across Stockholm immigrant districts in several nights of unrest, raising fears that decades of integration efforts have gone dangerously awry. The riots are believed to have been sparked by the deadly police shooting last week of an elderly man in Husby - a run down, low-income suburb that is only a short walk away from the Kista Science Tower skyscraper, a symbol of the booming IT sector in one of Europe's wealthiest cities.

The unrest has highlighted Sweden's failure to integrate swathes of its immigrant population, but in this small, consensus-driven country, there was little agreement on how to solve the problem resembling London in 2011 and Paris in 2005 - outbursts with their roots in segregation, neglect and poverty. —Photos by Agencies