[mongol]

No, it is because of a demographic shift due to oversized non-workforce immigration. Due to this, there are more and more areas characterized as "special vulnerable" (my translation of a Swedish police term). This is partly explained in English on this wikipedia page:

https://en.wikipedia.org/wiki/Vulnerable_area

The page shows how they have evolved since 2015 but if you go back to 2000 or so, they were just a handful.

Basically, the immigration has been larger than the society can "organically" integrate, and the result are new structures in society which did not exist before.