We all have a bias, I get that. We put our own slant on things, that's human nature. When a media outlet does it they are trying to use their power to sway the people and not simply report the news as it happened.
If most murders were commited by Asians I'd expect the media to broadcast that info, not that I would lump all Asians into one basket but to stay away from areas of town with known violance and to better understand why they commit the most crime.
When media does not report the facts they are doing a dis service to their listeners/readers/viewers.