Kjelt, I know that sounds a good idea, but there are serious repercussions that are not immediately obvious. You see, Finnish police and Finnish media decided a few years ago to do just that. (The police even stopped gathering and publishing statistics on ethnicities of criminals for exactly this reason.)
There have been cases where a suspect has been able to leave the country, because police refused to post the picture of the suspect because their skin color or ethnic origin would have been detectable. We have also had our own child grooming rings that were left to operate for years because the police assumed the reports were racist, and refused to investigate.
Because of this, we have a stark divide in Finland. One group assumes that whenever the details are not told, it is because the suspect is an immigrant; that there is a faction that wants to hide the crimes immigrants commit. The other group assumes that any complaints about immigrant behaviour are just racist hate speech, because there are none in the media. (The media here avoids publishing crimes if the suspects or perpetrators are immigrant or of a non-Finn ethnicity. The only media that does, is labeled "far right".)
It does not work, not here at least. This only creates a divide, and helps nobody. The ones who get hurt by this most, are the hardworking immigrants who do pay their taxes and abide by the law. The ones who benefit, are the ones who have no intention of conforming to local law: they get a free pass just by shouting "racist!". One half of the nation believes them, and calls the other half racist, while nobody does a thing to fix the underlying issues.
(And the ones whose ideology claims that immigrants only commit crime because of oppression, do not need to consider the evidence otherwise, so politicians in particular are happy.)
Hiding information, with the idea that "the public does not need to know", only makes things worse. Finland is an excellent example of this. We don't really have any traditional newsmedia left; the ones we have are all opinion writers, and fully believe their role is to be the gatekeeper of potentially harmful information. The 56% of Finns that does trust traditional media, are the ones with the same opinions as the writers.
No, I believe openness and educating kids about other people and cultures works, but this avoid-mentioning-details-that-might-be-misused does not. At all.