Media bias: the underlying beliefs, political views, and "agenda" of journalists and news producers. This bias, which may be stated or not, influences the selection of what stories are reported and how they are covered.
You may have seen a media bias chart. Such charts may be helpful, but be aware that bias is everywhere, even in the making of bias charts! Here is an article that discusses issues with such charts and related media rating tools.
Cognitive bias affects us all. Even though we can fact-check information using phones and computers, we still fall for fake news and cling to outdated opinions. Why? When our cognitive biases take control, our ability to make logical judgments is limited, and facts take a back seat to deeply held beliefs. (from KQED learning, PBS.)