Again, I think this is naive.
I refer again to one of the links I gave. There you can see that even among Muslims in the USA there is a considerably HIGHER - significantly so, in scientific terms - percentage that think it's ok to, for instance, stone women to death which are 'unfaithful'.
The only reason, thus, why the USA doesn't have as many problems (yet) is because of..numbers. It's as simply as that. Germany, last year, got 1 million (!) refugees - in one year, thus. In comparison to it's populace, that would be equivalent of the USA taking in 4 million a year. Everyone with a grain of intelligence will understand that, if the USA did the same, EXACTLY the same problems would occur. (And btw, once they got the nationality, you can't force them to settle anywhere, since as a citizen, they're free to go where they want, so your idea of 'spreading' doesn't help. In fact, after 20-30 years, there is no spreading to be done anymore, because they're in all cities with their own neighbourhoods).
Can you imagine how well the USA would fare, if they took in 4 million people per year for 20 years in a row, where 40% of them think the sharia should be above the constitution, and 12% think it's ok to stone women to death?
I say Islam is bad, because it IS bad - if you follow what is actually described there and you believe the stuff is actually the 'word of god' you have to follow. Other religions may be considered bad too, but those are NOT, or far, far, far less, being interpreted literally anymore, nor are the adepts of those religious so devout anymore, as it is with Islam.
In fact, the problem is NOT being fanatic, at least not on its own. Take the most fanatical Jainist, and that will lead to someone avoiding to trample on insects and who wouldn't even try to hurt bacteria. A fanatical Jainist would be a complete and utter pacifist. So being 'fantical' about your religion, when that religion is inherently peaceful, makes person that is fanatically peaceful. There is no problem with that. So how comes it is with Islam (and, granted, some other religions)? Because there IS bad in there, and it DOES say things that are antithetic to modern thoughts, and the more literally you take this, the more bad it becomes. So it's not just fanaticism that is the problem, it's the sourcematerial as well.
But anyway, the point is, the USA has no problems, not because the Muslims they have are so welcomed by the populace that they don't have any of the antithetical values and wishes anymore ( - as evidenced by the poll, they still have, and still with a far larger percentage than the rest of the populace), but primarily because they have far less than the EU. The percentage of Muslims in the USA make out 0,9% of the populace... in Germany, however, it is more than FIVE TIMES as high. Plus, the USA has far more landmass, so you *can* spread them better, in most EU countries, there is nothing to spread anymore: they're in every city, within there neighbourhoods. Many of which have become no-go zones for the police, btw.
It's all about numbers, thus. The more you have them, the more problems you get, because the more people you get with undemocratic ideas - EVEN if, as correctly noted, not ALL of Muslims share those views. My point is, that that doesn't matter: whether all adher to it or not, it doesn't change the fact that TOO MANY do, and that your society/civilisation is going to buckle under it, if one keeps accepting people where 40% wants to abolish your laws.
And the left has tried for 40 years to claim 'spreading' and 'education' will deal with it, and make them all integrate. Alas, wishful thinking: integration goes extremely slow and is very poor, with Mulims, simply by the fact they don't really want to integrate - especially the 40% that finds their laws should govern the land. In fact, polls have also shown, that even among second and third generation immigrants, it's even worse then with their parents that came in the 60'ies. A recent poll with those youth in immigration-neighbourhoods showed a whopping 90%(!) of them supported ISIS and thought them hero's. So much for integration!
Look, one has to stop being naive. There is a huge problem here, and even with the best of practises and methods, integration is going to be a slow process, and it will get slower the more of the same people (with the same culture and mentality, I mean) come in the country. By the time you integrated 10, there are already 100 more that came in, and after a while, they don't even want to integrate anymore, but expect us to accommodate them, whether it's housing, (Islamic) schools, courts (as they allowed in GB; biggest mistake ever), access to own media, etc. Not wanting to integrate anymore is not a joke, btw, there are actually some high-profile Muslims openly saying that in the media here, publicly. There mantra is that we 'both have to adapt'. No, we don't. Certainly not on base values.
What you say, is exactly what the left has been saying for decades thus, but in the meanwhile things have become worse and worse. It's because it is trying to empty the ocean with a thimble. As long as the tap keeps is running and overflowing, it's useless to try to mop the floor. Therefore, I'm a staunch proponent to close the borders so no new ones (or at least far fewer) get in, and THEN *prove* one can actually integrate the ones that are already in here, and see how well that works. The way we're doing it now, it's simply a matter of time until it all breaks down, and the killings, terrorist attacks, demonstrations for the implementation of the sharia, threats to people who they think insultted Islam or their prophet, will only augment. Hack, you already SEE that. It is augmenting, and rapidly so. Since 2004, Islamic terrorism has been the greatest contributor to all terrorist attacks. It has become number one. That doesn't mean all moderate Muslims agree with it, it's just - I repeat - that TOO MANY of the Muslims feel that way, if not in regard to terrorist attacks themselves, than in regard to values that are antithetic to ours.
I mean, it's not rocket science, is it. Look at those countries with large populations of Muslims: they have already serious societal problems with it, including violence and terrorist attacks (but not limited to that). And now look at countries and regions that have practically zero Muslims in their populace, like Iceland or Greenland.... how many Muslim terrorist attacks did they have?
How many cartoonists were killed there because they offended Mohamed?
How many want the sharia law established there?
I mean; for f- sake, the correlation AND causality is clear, no? If you do not have Muslims, you don't have the same troubles with Muslims that you have with countries that DO have large percentages of those. Yes, you still have other problems, and there is no certitude someone else won't do a terrorist attack or want the sharia implemented but FAR LESS, obviously.
Yes, it's a pity for those Muslims that do value our laws and mores, that want to integrate, etc. But: that's life. They're the victims of their brethren they can't seem nor actively try to control, then. I don't see why a society should slowly undermine itself and commit cultural suicide just because anyone knocking on your doorstep, one 'has to' let in. I refute that notion. A very strict immigration-policy - with absolute maxima - coupled with concerted efforts to integrate those already here, is the only way one can still hope to rectify the current mess we're already in. If we fail - and we will if one is not turning the tap close (or to a trickle) first - then in less than a hundred years, our current model of Western democracies following the principles of Enlightenment, is no more.