The fake Americans Russia created to influence the election

On Twitter, as on Facebook, Russian fingerprints are on hundreds or thousands of fake accounts

Sometimes an international offensive begins with a few shots that draw little notice. So it was last year when Melvin Redick of Harrisburg, Pa., a friendly-looking American with a backward baseball cap and a young daughter, posted on Facebook a link to a brand-new website.

“These guys show hidden truth about Hillary Clinton, George Soros and other leaders of the US,” he wrote on June 8, 2016. “Visit #DCLeaks website. It’s really interesting!”

Mr. Redick turned out to be a remarkably elusive character. No Melvin Redick appears in Pennsylvania records, and his photos seem to be borrowed from an unsuspecting Brazilian. But