Earlier quoted context omitted.
Until 2017 this actually was a rule (not a legally binding, just the "honor code") for media, but this got changed after the AfD and other Nazis whined for years that police and media would not "tell the truth" about migrant crimes, "suppress" or "hide" them ( https://www.migazin.de/2017/03/24/presserat-aendert-richtlin... ). A very sad day for our society.
Are you saying that facts should be suppressed because someone might use them the wrong way? Serious question.
For "everyday" crimes, think of pub brawls, petty theft, robberies, sexual misconduct of all forms, the ethnicity is absolutely irrelevant and its mention by police/media is only likely to further racial hatred.