Jack Schlossberg, the grandson of John F. Kennedy, went after President Donald Trump’s executive order declassifying files on the 1963 assassination of the former president.“JFK conspiracy theories,” Schlossberg wrote in a social post to his X account hours after Trump signed the order in the Oval Office Thursday. “The truth is alot sadder than the myth — a tragedy that didn’t need to happen. Not part of an inevitable grand scheme. Declassification is using JFK as a political prop, when he’s not here to punch back.”The 32-year-old youngest son of Caroline Kennedy and Edwin Schlossberg then added: “There’s nothing heroic about it.”ALSO READ: Inside the parade of right-wing world leaders flocking to D.C. for Trump’s inaugurationTrump, the subject of two of his own assassination attempts last year, had vowed on the campaign trail to release all documents on the Dallas incident that has long been the subject of fascination – both for historians and conspiracy theorists.He told reporters as he signed the order Thursday: “A lot of people have been waiting for this for years, for decades,” before adding “Everything will be revealed.”Trump’s order also includes declassifying all remaining files related to Robert F. Kennedy, the former president’s brother, and Martin Luther King Jr.Schlossberg, a Democrat, threw his support to President Joe Biden in the 2024 election after criticizing his cousin, Robert F. Kennedy Jr., a well-known conspiracy theorist himself who is now Trump’s nominee to lead the Department of Health and Human Services.