Could you help Mr. Peabody with the question in reply # 4? Link you master file on the conflict.
Opus Dei (or the 'work of God') is a traditionalist catholic organization. I believe it was founded in Spain in the 1920s. they have a history of working for conservative causes in the Church and in society. They also have a strong record of opposing leftist insurrections (from the 'republicans' in Spain to Allende et al in Latin America).
Opus Dei Website.
Their name is commonly trotted out by conspiracy theorists, like those of other 'secretive' and 'powerful' organizations--the Trilateral Commission, the Freemasons, the Bilderbergers etc. Interestingly, STRATFOR seems obsessed with finding Opus Dei influence in the recent Venezuelan coup.