I believe the term is used for those people who seem to be in a perpetual snit against the President. It isn't to be used for people who disagree with him on some issues. You have to have run across a few members of The Donner Party on some threads! They are pretty obvious.
Oh, I have...and never had a "name" for them before...
usually they are called "trolls", but then when you look at their home page...they are freepers for like 4-5 years!!!
NOW...I know...and you are a genius for the name you gave that group...