A video editor who shaped the buzzy Lincoln Project ads needling President Trump is no longer affiliated with the Republican organization over a series of past tweets in which he used offensive slang for female anatomy to insult political rivals. Ben Howe, who came of age politically making anti-Obama ads during the rise of the tea party, did not publicly tout his work for the super PAC formed by a group of high-level Republican operatives who have broken ranks with the party over Trump’s presidency until a recent interview with Vanity Fair. He was described in the article as “the...