Former Ku Klux Klan grand wizard David Duke said he was motivated to back pro-Palestinian protesters at a Detroit rally Friday in an effort to “save us from Jewish supremacism.” Duke, a 73-year-old white supremacist and one-time leader of the Klan, traveled from Louisiana to attend the alt-right’s America First Political Action Conference (AFPAC), hosted by white nationalist Nicholas Fuentes. After the event’s abrupt cancellation, Duke made an appearance at the anti-Israel rally, according to the New York Post. Duke was spotted in the crowd by undercover journalist Cam Higby, who shared his br…