In all seriousness, multiculturalism only works when immigrants are properly indoctrinated into the society they move to. It is also important that they have beliefs and values which, while different, do augment and assist the overall growth of the society they enter.
The problem at hand is that there are immigrant cultures that are not completely compatible with the societies that they want to make their home in. Nevertheless, they are accepted due to the generally embracing nature of democratic nations. Over time, however, the glaring incompatibilities surface as each new generation that descends from these immigrants do jockey for position with the "natives".
A common mistake that many world leaders have made is to believe that Islam is merely another religion to be tolerated, like Christianity. Islam is a way of life and many who LIVE that faith inevitably desire all around them to conform to Islamic rules and standards. While the previous sentences might sound a bit xenophobic, they exemplify truth.
Bottom line: These immigrants are not Christian, like the many immigrants before them who have built modern society (within the realms of the world powers) up to this point. They are Muslim, with an entirely different outlook and set of rules.
Within the next 20-30 years, the (religious) face of the world will change. It is already happening in Europe on a broad scale. In the Western world, the Islamic belief system is catching on like wildfire within some communities, particularly among blacks.
All of these facts will make for interesting times indeed. Global leaders who do not face these cold hard facts now will leave future generations wondering, "What were they thinking?"
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