Straight out of the Saul Alinsky / new left playbook. Always accuse your enemies of doing what your are already doing. It insulates you from attack. David Horowitz has volumes on tactics like this. And the DBM chooses to ignore his information and "just lay back and enjoy it."
Yep. I understand one technical term is "projection" in that they presume Republicans are doing what they are doing even if we are not. Democrats I know are totally convinced of it. This is also the basic defense of "everybody does it" they used to insulate Clinton's antics.
I've read some Horowitz's stuff on it. Don't think I've read the Alinsky book.