Germany: citizens registration

I just watched some RTL clip. They reported about robbers. In Germany, everyone can use the towns registry. You just need to have first name and surname and walk to the registry, then you get to know the address of the respective person. I mean it's totally ridiculous. They reported about facebook users who just published under their name and their city of residence in Germany. They wrote for example "I'm on holidays for 2 weeks." Then robbers went with name to the respective towns registr'y, got to know the location and robbed the respective flat.
Germany is really total junk when it comes to civil rights. The registry necessities date from Kaiser William, your chances to protest against this bullshit are virtually zero.