Aleister Crowley and O.T.O. are frequently labeled as evil. Several Christian churches consider O.T.O. to be Satanic (although the tenets of Thelema do not include Satan or his worship) despite a dearth of evidence to support the claim.
There are those, including occultists and Thelemites of other organisations, such as members of Grant's Typhonian Ordo Templi Orientis, who do not agree that O.T.O. as revived by McMurtry is the sole legitimate continuation of the Order as headed by Aleister Crowley. Those who hold such views tend to refer to the O.T.O. as revived by McMurtry as the "Caliphate" O.T.O. (based on McMurtry's title of Caliph) so as to distinguish it from other organizations that use the name "Ordo Templi Orientis". There are even members of the O.T.O. as revived by McMurtry who refer to the organization as the "Caliphate", though this is discouraged.
Other organizations that use the O.T.O. name and consider themselves to be legitimate continuations of O.T.O., are O.T.O. Foundation, Albion O.T.O., The Parzival XIA° O.T.O. Foundation.
In 2002, an ex-member writing under the pseudonym Satyr published on the web 'The Black Lodge of Santa Cruz', a detailed account of events from his viewpoint in O.T.O., Inc.
Books You Might Enjoy:
Scott Cunningham - Wicca A Guide For The Solitary Practitioner
John Opsopaus - Interpretationes Of Ancient Herbs
Robert Mathiesen - Magic In Slavia Orthodoxa The Written Tradition
Eliphas Levi - The Key Of The Mysteries
Aleister Crowley - Liber 101 Ordo Templi Orientis An Open Letter