Check this out and put it in the context of recent events in HK financial market and government issues like those related to the regulation of post-service directorate civil servant.
"Behavioral economist Dan Ariely studies the bugs in our moral code: the hidden reasons we think it's OK to cheat or steal (sometimes). Clever studies help make his point that we're predictably irrational -- and can be influenced in ways we can't grasp."
http://www.ted.com/talks/dan_ariely_on_our_buggy_moral_code.html
There's also an interview here with the speaker. The last 8 minutes or so is the same as the talk but the first half is different.
http://www.tvo.org/TVO/WebObjects/TVO.woa?video?TAWSP_Int_20090318_779456_0

