Hillary Clinton at a campaign rally at Truckee Meadows Community College in

Hillary Clinton at a campaign rally at Truckee Meadows Community College in Reno, Nev., on Thursday. Credit Max Whittaker for The New York Times As Hillary Clinton assailed Donald J. Trump on Thursday for fanning the flames of racism embraced by the “alt-right,” the community of activists that tends to lurk anonymously in the internet’s dark corners could hardly contain its glee. Mrs. Clinton’s speech was intended to link Mr. Trump to a fringe ideology of conspiracies and hate, but for the leaders of the alt-right, the attention from the Democratic presidential nominee was a moment in the political spotlight that offered a new level of credibility. It also provided a valuable opportunity for fund-raising and recruiting. Jared Taylor, editor of the white nationalist publication American Renaissance, live-tweeted Mrs. Clinton’s remarks, questioning her praise of establishment Republicans and eagerly anticipating her discussion of his community. “Come on, Hillary,” he wrote. “Talk about Alt Right.” In an ode to Mr. Trump’s characterization of Jeb Bush, Mr. Taylor described her speech as “low energy.” Other white nationalists mocked Mrs. Clinton, saying she sounded like a neoconservative and a “grandma,” while welcoming the publicity.