Army Major General Antonio M. Taguba's delayed admission of the Department's squelching of him and his official investigation into Abu Ghraib (refusing to view the uncovered photos and videos of abuse, forcing Taguba to retire after 34 years of service) is shocking and the implications severe. At least we're at the breaking point now.
Rumsfeld then gambled on the public not wanting know as much as he wanted to cover it up. Hence his major concern in that meeting with Taguba: not preventing and exposing appalling war crimes on his own watch - but finding a way to persecute the guy whose duty it was to investigate it.