Dan Rather: Legacy of Bias
In fact, Rather was never much of a journalist, and he had a long history of liberal bias.
For the details on the latter, see the web site of the Media Research Center.
What destroyed him was less the fiasco of the forged documents that he trumpeted as proof of George Bush’s laxity as a National Guardsman than his stubbornness and boneheadedness in denying that anything was wrong with the story. That perfectly epitomized Mainstream Media arrogance.