It's not just metro cities, and it is not just liberal media, and it is nothing new. As far back as 30 years ago in Dover, Delaware as a radio reporter I had to ask the local cops the race of suspects or perps more times than not because it jut was not included in their release to the media. The same is true when it comes to seat belts or alcohol involvement in motor vehicle wrecks - if no mention of either is made, it is a guarantee that seat belts were being properly used and those involved were stone cold sober.