Don’t know if you guys have found this, but here is on Youtube a clip where Anders Behring Breivik promotes the book he’s written as a manifest to warn people about islamization and cultural marxism - 2083 – A European Declaration of Independence.

The book itself can be downloaded here.

The clip was uploaded yesterday July 22 on Anders Behring Breivik’s Youtube channel, where he uses his English pseudonym Andrew Berwick. So he uploaded it just hours before he went on his killing spree.
He obviously compares himself to the knight templars of the crusades. Might explain somewhat why he did it.