Riots in Sweden: what next?

Sweden has had the most liberal immigration policy of all EU countries. As a result, the country has a notably large population of people with their roots in developing countries, some of the world´s highest records of sexual crimes and poor results in PISA-tests. 

During the few recent days many Swedish towns have faced incredible riots with police being violently  attacked and its vehicles damaged. The unrest started as a Danish right-wing politician announced he would burn Quran, and Muslims responded again as Pavlov´s dogs, and started their violent behavior against the Swedish society as expected.

It remains to be seen what happens now in Sweden as the riots have been more serious than ever before. Are they able to find and punish those responsible on the damages? Will they narrow the freedom of speech and expression? Or will they change their immigration policy, and perhaps effectively return criminals and people without a residence permit to their home countries?

And most importantly: will any of those actions - if conducted - change anything? Or has Sweden gone over a kind of a borderline of no return, and will continue towards a highly polarized society, where people and their neighborhoods are divided by religion, language and skin color?

Previous thoughts on the same topic:
The arrival of caliphate citizens must be prevented
Rape statistics in Finland and Sweden are breaking prejudices