Who Is Laura Loomer, the Far-Right Activist Who Traveled With Trump?

Five years ago Laura Loomer, a far-right activist with a history of expressing bigoted views and a knack for generating publicity, filed an application for a trademark to protect her work in “the field of political activism.”

Ms. Loomer, 31, part of a generation of web-savvy right-wing influencers, decided to trademark the term she had coined for her signature move of ambushing people with unexpected, often embarrassing questions. She called it getting “Loomered.”

Already a well-known figure among internet obsessives thanks to her anti-Muslim activism, undercover sting operations and political stunts, Ms. Loomer found herself at the center of the presidential campaign this week when she traveled with former President Donald J. Trump. She went with him to Philadelphia for the presidential debate, and then accompanied him to Sept. 11 memorial events in New York City and Shanksville, Pa., which drew pointed criticism from Democrats and Republicans because she had previously called Sept. 11 “an inside job.”