To search for all documents tagged with a privilege tag, use the hasprivilege(true) search syntax. To include all redacted documents as well (even if they don't have a privilege tag), use that search AND the hasredactions(true) search.
To create and download the privilege log, in the DISCO main menu, click Privilege Log. On the Privilege Log page, click the Download Privilege Log icon.
In the Download Privilege Log dialog, select what you want the log to be sorted by, and then click Download.