After president Donald Trump’s administration released 80,000 previously-sealed documents pertaining to John F. Kennedy’s assassination, JFK’s grandson Jack Schlossberg issued a scathing statement.  Jack Schlossberg is posting up for his grandfather’s legacy.  After President Donald Trump’s administration released 80,000 previously-sealed documents about John F. Kennedy’s 1963 assassination, JFK’s grandson shared his thoughts.  “President Trump is…