The god concept - common to many though not all religions - is the ultimate organizational corruption. A god would have total authority with no accountability. The priests and potentates who cite god as the source of their authority similarly wield total authority with no accountability.
Practical religion is sociocognitive warfare. With this realization, a great deal of what is considered by Americans to be ``culture'' or ``political systems'' is seen to actually be religion. For example, though communism in the USSR was atheistic (denied ``belief in the existence of one God viewed as the creative source of man and the world who transcends yet is immanent in the world'' (from Webster)), it was obviously a religion. As one peruses the litany of establishment tactics in my introductory essay, the burrowing of religion into the American cultural landscape becomes clear. Many of the tactics squarely aim to subvert reason.
I don't agree with everything this guy says on this website but he has the best write up on religion that I have ever seen.