Hint: Look in the mirror.

The amount of bias in news seems to be directly proportional to the amount of bias in ourselves.

…the hostile media effect suggests we’re not as smart as we think we are. We might like to think of ourselves as impartial judges of credibility and fairness, but the evidence says otherwise. Liberals and conservatives can (and often do) believe the same news report is biased against both their views; they aren’t both right. - Nieman Journalism