Every story has multiple sides and multiple perspectives. When only one side is told over and over again, to the exclusion to others, bias is fully in play. Principles of Professional Journalism call for covering 'all sides' of an issue, impartially. Wise media consumers pay attention to both what is being said and also what is not being said. Stories not being told often hold many parts of 'truth' necessary to have an informed, intelligent discussion about complex issues.