Is Fox News going soft? That is what a number of Tea Party activists are saying and they are organizing a boycott to protest the conservative station’s coverage, especially what they view as the network’s relative silence in investigating the attacks on a diplomatic mission in Benghazi, Libya. “Particularly after the election, Fox keeps turning to the left,” said Stan Hjerlied, 75, of Fort Collins, Colo., and a participant in the boycott. He pointed to an interview Fox News CEO Roger Ailes gave after the election in which he said that the Republican Party and Fox News need to modernize,...