Merkel's statement "Islam belongs to Germany": De Maizière emphasizes duties for Islam. Freely interpreted according to Saxony's Prime Minister: "Saxony is welcome as part of the Federal Republic. This does not mean, however, that Saxony belongs to Germany." - you can see that in the mental outpourings of those politicians. And in the language.
One could also apply De Maiziere to Saxony and remind it of a few duties. For example, the Basic Law. And yes, De Maiziere is right, but perhaps he should also direct his statements towards the Christianists, who are also quite annoying to atheists with their moral claim to exclusivity - I don't care which mythical beard is held up to me with an raised index finger to tell me what I may or may not do.