By David Edwards Fox News host Howard Kurtz took a shot at former President Donald Trump after he declined to condemn a violent attack on Paul Pelosi, the husband of House Speaker Nancy Pelosi (D-CA). “We’ve had all sorts of threats against members of Congress,” Fox News contributor Mara Liasson told Kurtz on Sunday. “The preponderance [of attacks] in the last five years have been associated with right-wing rhetoric. But it’s up to both parties to stand up and say this has gone too far.” Kurtz said he was “glad to see” that some of House Speaker Nancy Pelosi’s opponents had condemned the attac…