“We must dig deeper to understand that,” he said quietly.

Some experts say you do not have to dig that far. Sweden’s liberal policies have become costly. In the 1950s, ’60s and ’70s, Sweden, which had more manufacturing jobs than citizens to fill them, invited immigrants in. Most came from other European countries. They worked and paid taxes. Those were good years for Malmo, which had shipyards and a textile industry.

When those jobs disappeared, Sweden stopped the flow of immigrant labor, but not the flow of refugees, many of whom clustered in Malmo and other former industrial centers. Jobs were still scarce, but housing was available, apartments built long ago for laborers.

In some of those apartment blocks, the unemployment rate among immigrants stands at 80 percent. Still, their children need schooling, and they have elderly parents who need health care. Some are damaged by the violence they have lived through. They suffer from post-traumatic stress disorder and drug and alcohol addictions.

Prof. Jan Ekberg, an economist at Linnaeus University, questions the policies that allowed so many refugees to settle far from jobs. “They are depending on the public sector now as never before,” he said. “That was a policy mistake.”