An academic and archaeologist who was cancelled for supporting Britain keeping the Elgin Marbles has issued a warning over “dogma” ruling museums.Speaking to GB News, Dr Mario Trabucco Della Torretta revealed he was disinvited to speak at a gala dinner in Athens because of his views.He claimed organisers at the Acropolis Museum objected to his appearance due to his campaign to keep the marbles in the British Museum.Speaking about the controversy…