Sweden was one of the countries which specifically took the refugees that other countries didn't want: Somalian, Eritrean, Syrian, Afghan, etc. If you look at other countries that have taken people from these countries, the same thing has happened but at a lower level. Sweden went as far as it is possible to go, they let anyone in and gave them citizenship immediately...this is the result, that is why they have had particularly severe problems.
I will also gently point out...the recent wave of illegal immigration into Europe is coming from these countries again. Other countries are represented, some of these have their own issues but the specific issues with people from one or two of the countries above (I won't name which) are well-known and exist in every other country they have ended up (in the case of one, this has been going on since the mid-90s...the reason why no-one wanted them before is because countries have tried to take them before...and it didn't work, Sweden had very specific beliefs about integration that guided their decisions...and they turned out to be very wrong).
This is exactly it. Sweden took in the lowest quality immigrants, that did not even have id, lied about which country they're from and many were convicted criminals.
There it is said that only a third of the gang members are German citizens. They've got like 100 gangs that matter there, and pretty much all are Turkish (Kurds too, not that specific ethnicities matter too much but the point here is that they are immigrant gangs and they are a direct result of the immigrant policies).
I think the biggest difference is that for immigrants, Germany is seen as country where one can prosper, have a good job and a nice car because of its strong economy while Spain is seen as a paradise where you can live a decent life on government subsidies because of its policies, also the weather and culture.
Edit: I must add that here in Spain we have the "okupa" problem where people occupy unused houses for years sometimes before a judge rules they should be taken out.
Sweden was one of the countries which specifically took the refugees that other countries didn't want: Somalian, Eritrean, Syrian, Afghan, etc. If you look at other countries that have taken people from these countries, the same thing has happened but at a lower level. Sweden went as far as it is possible to go, they let anyone in and gave them citizenship immediately...this is the result, that is why they have had particularly severe problems.
I will also gently point out...the recent wave of illegal immigration into Europe is coming from these countries again. Other countries are represented, some of these have their own issues but the specific issues with people from one or two of the countries above (I won't name which) are well-known and exist in every other country they have ended up (in the case of one, this has been going on since the mid-90s...the reason why no-one wanted them before is because countries have tried to take them before...and it didn't work, Sweden had very specific beliefs about integration that guided their decisions...and they turned out to be very wrong).