Comment by belorn

If those religious groups has views that undermining the constitutional order, then Germany could prosecute them. That is the underlying legal argument. The basic law give every German the right to any belief or non-belief, but then it also limit that freedom in case it undermines the law itself. Does the religion opposes human dignity, do it support democracy, and do it support the rule of law in Germany. Teaching that say that same-sex marriage is wrong could be seen as opposing human dignity, thus not allowed under the basic law.