NBC News correspondent Katy Tur, who decamped from the network’s London bureau this summer to cover the Trump campaign full time, got a sour taste of the candidate’s grievances and belligerence Monday night, notably his rather disturbing attempt to incite the mob against her, at a rally in South Carolina. “Little Katy, third-rate journalist,” Trump declared during a bitter peroration about the “absolute scum” who allegedly populate the news media and report “dishonestly” on his triumphal march to the White House. The real estate mogul/reality show star punctuated his insults by calling out “Katy Tur!” and pointing her out to the crowd gathered in a cavernous space inside the USS Yorktown, a World War II-vintage aircraft carrier docked in Mount Pleasant.