So I find that at municipal level, the larger size of middle class, those who live in urban area or are at least ever educated in high-school, contrary to the idea that they are the strong pressure group in favor to clean governance, is associated with lower, yes, lower bureaucracy's governance quality.
I decided to call Philips, my favorite political scientist (and avid LP collector), to consult this result. After hearing my brief explanation, he just laughed and said, " they are probably the bad guys themselves".
Maybe so. Any other idea?