Recognizing that bias exists in every human report is step one. Learning the necessary skills to detect bias is step two.
A presumably educated person who presents a report without acknowledgement of his own biases is being dishonest at the very least with those who have not acquired the necessary detection skills. The group in the US without these skills unfortunately includes the vast majority of the population with non-scientific educations. That is the vast majority of the population these days.
The difficulty with our mainstream media and our current government is that they present their biases as if they were fact and truth. In other words, perhaps sometimes without realizing it, they lie.