1) Those who are lying purely for the money/power. These people just don't care about others anymore. (Well, 'their actions are such that one would assume that') however this is quite possibly due to what appears to be the incorrect assumption that society doesn't really change.

2) The majority have made an incorrect assumption, that is now hidden behind the wall people put around their beleifs. This changes the interpretation of new data; in this case the entire reality is such a way that it appears the logical deduction, that given the assumptions (with an unkown flaw) must be correct. Each one of these is beleived, and forms a new incorrect assumption.

I realise that not going into detail has caused this post to be somewhat opaque, please tell me if I am required to elaborate.
Cheers,
R_A.