Could you please rephrase the question slightly as it is a little confusing/ambiguous?
However...
Recently Merkel came out in Germany and said that German multi-culturalism had failed- I would be interested to hear someone from Germany's perspective on that.
But I think you need to question the word multi-culturalism. I think it's bullshit and does not exist to any great extent. I think it's one of those convenient words politicians use to unspeak their way out of problems.
When they talk about a multi-cultural society they imply ONE society of many cultures- but that's not really what I see. I don't see a cohesive yet diverse society. I see evermore groups of people that don't like each other pissing the other ones off. I see people living in ghettos or cultural islands where integration is either impossible or perhaps even feared and unwanted. I see other people who often hold quite racist views claiming that the others don't want to integrate--- well, strange that- why the hell would you want to integrate with someone who thinks your inferior or trying to take over? Then of course there is a backlash, often quite reactionary, which provokes more badfeeling and so on and so on until it spirals out of control and people like Merkel suddenly declare that mutliculturalism has failed.
This is obviously going to vary from country to country and probably depends on what levels of immigration a country has had and so on. America should be very mutli-cultural yet a lot of Americans I have encountered are very racist- I don't mean in the stereotypical sense of KKK versus Black Panthers but you've got Italian-Americans who hate Irish-Americans and then you've got others hating the Hispanics "because they are criminals" then you've got this group and that group. I don't know what it's really like, but it's the perception I have. Some Italian-Americans make a fine show, and here I speak from personal experience- they tend to lament how much they suffered from discrimination in the new country and yet hold very racist attitudes towards other groups, especially the Irish for some reason. One guy even told me that if you speak Italian in Boston you'd get beaten up!!!!!! I'm sure he was exaggerating but the very fact that he said that means something isn't right. Perhaps I could ask an American here to elucidate- why is the stereotype of the Italian American always a male chauvanist bigot with racist views and perhaps a criminal?
In Italy itself the situation is complex. In terms of non-European/non-white immigration Italy has only relatively recently experienced an influx of immigrants and a lot of older people especially don't always know how to deal with the new situations that arise from that. Sometimes they say things that would make people in other more "multi-cultural" areas shudder, but really it is more through ignorance than malice if you follow me. Like there's a nice old lady who thinks all people from the Far East are Japanese, but she isn't unkind- she just doesn't understand.
Then of course there is the Italian right, given Italy's fascist past this is not funny and recently there seems to have been a rise in fascist groups- even opening up centri sociali (social centres that were originally by definition left). A person I know of got beaten up by some of these bastards when he was walking home, they saw his "communist student" look and asked him for a donation to their party, which they then extracted from him anyway. This is another reason I don't go to football (real football i.e. soccer) matches like I used to do. It doesn't help when certain politicians are overtly fascistic either. The "older" forms of racism emerge, the anti-semitism and the red/black/yellow peril etc etc.
But then there is, shamefully, racism between Italians too. The old north-south divide even has one party Lega Nord that seems to blame most of Italy's ills on the south and regards the south as part of N.Africa more than Italy- not that I have a complaint about N.Africans but in the context of the Lega Nord it is an attack.
I suppose from the outset Italy was a multi-cultural nation within an Italic context, not to mention German-speaking, Greek-speaking, Albanian and French-Provencal minorities. The famous quote that "we have made Italy and now we must make the Italians" seems to have failed to a large extent.
So mutli-culturalism, or many cultures- It depends on a whole complex array of issues- but of course any rightwing/nazi group etc is going to be against it even though they probably don't perceive things in the same way.
Anyway here's a Youtube I found to get a glimpse about our reality....
The Group is devoutly leftwing too,
+ YouTube Video


) matches like I used to do. It doesn't help when certain politicians are overtly fascistic either. The "older" forms of racism emerge, the anti-semitism and the red/black/yellow peril etc etc. 
