It is not the fault of the Dutch that immigrants did not assimilate.  (Or rather, perhaps it is because they were not forced to assimilate. The Dutch have made great strides in forcing assimilation, such as making new immigrants learn to understand and speak Dutch within a year of arriving: language is so important in the assimilation process.)  I can't speak for France, but for the Dutch, I can.  The push back against multiculturalism started 12? Years ago with Pym Fortyn.  Why? Because of cities such as Schilderswijk in the NL, where Sharia law rules, police are afraid to go, and non-Muslims are continually harassed...pet dogs with throats slashed, Jewish synagogues defaced, list goes on. If this can happen in theNL, one of the most liberal, accepting countries in the world, it can happen anywhere.  I've been there, have you?  Don't point your smug "it's their fault" finger at the Dutch, until you really know what has happened, and what is happening. As you said, acquire information.