Is it true: Protocols of the Elders of Zion?

No — this has been debunked.

The forgery is documented in extraordinary detail. Philip Graves's 1921 London Times series (August 16-18, 1921) placed the Protocols side-by-side with Joly's Dialogue in the Hell, showing many passages copied verbatim or near-verbatim, with the despot's programme in Joly's satire re-assigned to a supposed Jewish conspiracy. Scholarship (Herman Bernstein in 1921, later Norman Cohn and Pierre-André Taguieff) traced the forgery to Russian Okhrana (secret police) circles around the turn of the twentieth century; that attribution is widely accepted but not proven by a signed record, and the identification of Matvei Golovinski as the likely author (named by Princess Radziwill in 1921, later supported by Mikhail Lepekhin's 1999 archival research) is disputed. The 1935 Bern trial found the text a forgery and plagiarism; the 1937 appeal acquitted the defendants on narrow legal grounds without disturbing that finding. In 1993 a Moscow district court heard expert evidence that the Protocols are a forgery when it dismissed a libel suit brought by the newspaper Pamyat. No credible historian disputes the forgery.