Apparently, the point of the article is being missed.
It isn't lazy, young Swedes that are rioting.  It is - of course - immigrants from the third world.  Key quote:
"
One expression of Sweden’s tolerant outlook has been the welcome  extended to immigrants and asylum-seekers fleeing violence in countries  like Afghanistan, Somalia and Syria. Around one in seven of its almost 10 million people are now foreign-born.
But many newcomers have been pushed to the margins, reliant on  low-paying menial jobs and often concentrated in poor suburbs like  Husby. 
Unemployment among those born outside Sweden stands at 16 percent, compared with 6 percent for those born in Sweden."
They imported a bunch of unskilled, ignorant laborers into the country - none of whom know a word of Swedish.  They fit in like a square peg in a round hole.
Now they are rioting.