Europeans are not one size fits all, even West Europe is differentiated when it comes to immigration and integration. France is not the Netherlands, Denmark not Italy. The banlieues are a typical French phenomenon.
With regard to my own country it's complicated. A long history of colonies, slave trade, plantages etc. The decolonization after ww2 brought people from Indonesia to Surinam towards the Netherlands. And later on in the sixties and seventies the nation was meanwhile becoming a welfare state people came form Turkey, Maroc to work in the industry.
Did the integration went well, yes and no. In fact it are phases, after decennia immigrants do get integrated (with trail, error and succes!). People from Indonesia and Surinam did face integration problems in postwar Dutch. The Indonesians, for example, consisting mainly of ex-servicemen and their families, who had fought on the Dutch side, were frustrated for years because they had been promised their own homeland. This led to
hostage taking, train
hijacking, etc in ths seventies.
On the other hand or better meanwhile the integration went on on "the grassroots level"- the Indonesians are very well integrated and many are married with 'cheeseheads'. Many national politicians have partly Indonesian roots. It is striking that this is especially the case with the leading figures of the extreme right (Thierry Baudet and Geert Wilders).
However, it is nowadays still the case that people who apply under the name Mohammed have fewer opportunities. Moroccans in particular sometimes stand on the sidelines. Not uniform. The mayor of Rotterdam (
Ahmed Aboutaleb) for example, is of Moroccan descent. Nevertheless, the
Mocro Mafia is notorious and even poses a serious threat to the rule of law. So a clear picture: no. Sometimes success, sometimes failure.
What I don't recognize at all is cultural Marxism. I belong to the Northwest European Social Democracy. Certainly left, but deeply connected to parliamentary democracy, and fierce anti-totalitarian (in either communist or nazi form). Commitment to equality-equal chances- and at the same time enormous austerity, pragmatic. Rhineland capitalism.
It's a movement unknown in the US (perhaps parts of the New Deal came close, some of the Cold War Liberals too). I don't actually know of an Italian example that comes close, may be some of
Daisy are closest.
But - and now I may be exaggerating - in the trench culture in the current US there is no longer an eye for nuance and difference. It's immediately waving with labels like "woke" and "cultural marxist" etc etc. Bizarre (imho)