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Want to come here? No problem but you need to adapt to your new home. That means dress, speak and act like the people that live here.
Er, Balthazar doesnt speak for us all. I'm happy we enjoy the benefits of a multi-cultural society; our great mosaic
I really think and believe that you both have your dose of reason.
Portugal was a country of emigration long ago, but has become an immigration country now, being the "official" number of around half million immigrants in a +/-10M population, but it is commonly accepted that the immigrant community should be around 10% of total.
So, I could say that Portugal is also a multicultural society, with communities from former African colonies people, to Brazilians (the biggest community now), Slav people (mainly Ukrainians), Indians, Chinese and in a small number South Americans and North Africans, and we are proud to receive all them and we try to integrate them in our society (we have the ACIME - Alto Comissariado para a Imigração e Minorias Étnicas).
Portugal is a Catholic country by great majority, but there are communities of (almost?) all religions in Portugal with their respective prayer sanctuaries (Islamic community, Judaic/Jewish, other Christian branches, Buddhist, and so on...).
I don't remember any event of religious places being attached or even I remember anyone being insulted/hurt when walking on the streets or anywhere else because of one's religious faith.
However, and sorry for repeating myself, although without the imposition of resigning to their original cultures and beliefs (not at all), anyone living in a foreign country must abide the local Law and culture if one also wants to be accepted and respected by the others.
And what we know is that in the majority of the Arabic countries/societies this doesn't happen (foreign people are usually not allowed to profess their own religious options, nor some or most of their cultural uses), while in the Occidental civilizations this is quite common.
Moreover, although it might seem quite radical, in my opinion anyone who doesn't want/intend to abide the cultures and Law of the country where one is an immigrant, then one should leave that country (or shouldn't have emigrated to that place in first instance), or the local authorities should impose one to leave, if one is caught in fault and shows the intention of not changing one's behaviour and moral conduct.
Like the saying: "If you put a rotten potato in a sack of good potatoes, all become rotten... and if you put a good potato in a sack of rotten potatoes it will become rotten too".
Unfortunately that's how things work most of the times in society terms.
To excuse someone's faults with the mistakes committed by others (like the film posted by a member intended, maybe) must not be accepted in a civilized society. That would be like to agree with the act and that can't happen.
We can educate and teach foreign people when they commit such an act, but never agree with or excuse that person.