Why was Fox news attacking Republicans all day? Attacking Newt and Palin And Trump?

Charles Krauthammer told Bret Baier Newt Gingrich is a threw and finished . He bashed him for his statements about the fringe right vs the fringe left. He said he was a " Out of Control hog ". Then You have Bernie Goldberg and Bill O'Reilly attacking other host's on Fox News for being so partisan. You have Juan Williams saying "Trump never had the heart from the start to run for president becoz of his greasy fingers". Hannity said he was "disappointed in Huckabee and he should have never Promoted him". Charles Krauthammer said Palin is a " Losing Validity with her rhetoric, and a profound disappointment who is falling faster in the polls than her facebook page is losing followers" I have never seen so much Republican vs Republican action on this network. Neal Cavuoto Slammed Republicans on Business for Abandoning their Stance on Medicare Reform. Saying " Nobody will take them seriously anymore after this abandonment and the failure of the tea party house to push for real reform" Why are they all so upset? Is it becoz of the news about Huckabee Trump and others not running for president? Today was like watching another network. I have never seen so much in house fighting before on fox news.