High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Thierry Meyssan (born 18 May 1957 in Talence, Gironde) is a controversial French journalist and political activist. He is the author of investigations into the extreme right wing (particularly about the National Front Militias, which are the object of a parliamentary investigation and caused a separation of the extreme right wing party), as well as into the Catholic Church (Opus Dei, for example). Openly gay himself, he has also been an activist against anti-homosexual discrimination. Meyssan is best known for his controversial book 9/11: The Big Lie (L'Effroyable imposture), in which he presents evidence challenging the official account of events of the September 11 terrorist attacks.