Of course there is bias in the media, and it's not hard to prove, remember Trayvon Martin? How about Christopher Cervini? Here's the bare bones of both cases, a man shot and unarmed teen, in both cases 911 had been called to report suspicious activity, in both cases the shooter confronted the suspect before the police arrived, in both cases the shooter said the felt threatened and fired in self-defense. There were some differences, in the Trayvon Martin case the shooter was "white" in the with the Christopher Cervini the shooter was black. Also in the Christopher Cervini case there were two other teens that scattered away from the shooter.
Now how much press did Christopher Cervini get? Not much, you may have heard about it on Facebook or other social media, but the press hardly mentioned. the case. With Trayvon Martin we heard and are still hearing about the case months after it happened. The press wanted the play the race card, Trayvon fit while Christopher didn't simple.
Trust me all media is bias, the fictions of the unbiased reporting is and always has been fiction, we don't and have never got who, what, when, where, why, we get news filter and twisted to show the point of view of whoever is reporting on it.