This is their HateWatch blog, which seems to be a constant thing, focused solely on "radical Right", which of course includes Palin, Bachmann, etc.
So, for the SPLC, opposing what they consider the Tea Party "Patriots" (with or without the quotations) is a main effort of this civil and legal rights group.
And why shouldn't it be? Because any activist opposing government overreach who isn't a leftist must be brewing with hate and a dark agenda. Obviously there is NO SUCH THING as as a radical Left group, or surely their blog would not solely focus on the "radical right" (as they see it, which is radical, or just in disagreement with their government-hugging agenda).--