In the lead up to the invasion of Iraq the MSM was pretty much committed to promoting the invasion. Afterward, they became rather critical of their lack of critical evaluation of the justifications for war. More recently the MSM promoted the candidacy of Obama without much critical evaluation of who he is and where he stands on the issues. I wonder how long it will be before they come the regret their Obama worship.
It is not MSM bias that should concern us all. Everyone has bias. I am certain even they are aware of their bias. What should concern us all is the fact that the MSM are so gullible. Or perhaps even worse, that they know it and still feel compelled to go forward.