In my games so far (prince, king, emperor) I've been hated by the AI a lot. Usually my worst offense is 'You have a different government', which is apparently a reason to denounce me. Of course I get the occasional warmonger accusation, but if I conquer a capital in 0 AD, It's not really a reason to be angry about it in the 1800's I suppose? I'm usually ahead on Science, have a pretty strong military, and am not very religious. Is that the reason of the hate?