Where does your conclusion stem from? I haven't been aware of the German government discriminating against these groups, nor of the CDU proposing laws to do so.

Where does your conclusion stem from? I haven't been aware of the German government discriminating against these groups, nor of the CDU proposing laws to do so. One issue I can think of is same-sex marriage, but there's laws enabling same-sex couples to get into a "Lebenspartnerschaft", which is functionally equivalent to a marriage. There is some areas where things differ, like certain clauses in the explosive ordinance regulations, criminal rehabilitation law and census regulations. Granted, it doesn't say marriage, but it's close. Regarding the legal treatment of Muslims in Germany, there seems to be two issues. One being head-scarves, the other circumcision. On the former, the German constitutional court ruled in January 2015 that a general ban in schools is unconstitutional. The latter, the state court in Cologne ruled as grievous harm, but this was later overturned by a law passed by the Bundestag. Really, the spirit of the formulation the CDU used does not specify which God. Even taking it in bad faith, one has to remember that Islam and Christianity are both abrahamic religions, so they share the same god, which makes it doubly moot. There are legitimate issues to be talked about in this context, from integration of immigrants to a growing anti-islamic sentiment in Germany and the rest of Europe.