I think we should be a little more amazed that this report is available at all---an through internal channels at that. While we're all bashing the CIA for what they've done (and are right to do so), we should also appreciate that this is also at some level an instance of government working "properly": one branch of government audited another branch, found that there had been misconduct, and was able to publish a report showing what had been done wrong. This is not the end of the road---we still need to fix the problems and prevent them from happening again---but publicly acknowledging the problems is a massive first step.
Before we all jump on the bandwagon to paint the USA as the next major authoritarian regime, ask yourselves the question: would this report ever get published in North Korea, China, or the former USSR? Frankly, I can't imagine it. This report proves that the USA might not be better than any of those countries with regard to these events... but at least it appears that the USA has the guts to acknowledge publicly its mistakes.