In Sweden, the immigration of the past few decades, and especially the last few years, is considered an enormous failure by most. Immigrants aren't being integrated into the job market or society at large very well, and immigration-related problems dominate the headlines.

2018 is an election year, and fixing immigration-related problems is the major issue to voters. The major parties are mainly competing on who can be the toughest on immigration and crime in immigrant neighborhoods. Still, the right wing populist Sweden Democrats are expected to net 20-30% of the vote (in 2006 they were the only anti-immigration party, and they got <3%).

In general, I think it's hard to underestimate the effect immigration has had on the political climate in Sweden. Polarization is way up, trust in established media is way down, populism is way up, hope for the future is way down, anti-immigration sentiment is way up, anti-EU sentiment is way up, etc. And as far as I can tell, these trends are only picking up steam.

Which is a huge shame really, because Sweden has traditionally been very liberal and pro-immigration, and immigration worked really well up until at least the mid-80s.

I don't think Sweden is relevant to this discussion other than as a cautionary tale of how liberal immigration policies can be disastrous when implemented poorly.