If the MSM ever go around to calling them out on it, they would simply change the script to say that those posts were done by “conservative operatives” intending to make kind-hearted well-intentioned liberals look bad.
They've always been biased to the left, but recently they've thrown any pretense of impartiality into the trash.
The rise of alternative media - the first competition they've had since the birth of electronic media, has driven them batsh*t crazy.