OK, now on to the fundamentalists:
The only way all fundamentalisms can have the same agenda is if the agenda preceded all the religions. And it did. Fundamentalist behaviors are familiar because we've all seen them so many times. These men are acting the role of “alpha males” who define the boundaries of their group's territory and the norms and behaviors that define members of their in-group. These are the behaviors of territorial species in which males are stronger than females. In biological terms, these are the characteristic behaviors of sexually dimorphous territorial animals. Males set and enforce the rules, females obey the males and raise the children; there is a clear separation between the in-group and the out-group. The in-group is protected; outsiders are expelled or fought.
It is easier to account for this set of behavioral biases as part of the common evolutionary heritage of our species than to argue that it is simply a monumental coincidence that the social and behavioral agendas of all fundamentalisms and fascisms are essentially identical.
What conservatives are conserving is the biological default setting of our species, which has strong family resemblances to the default setting of thousands of other species. This means that when fundamentalists say they are obeying the word of God, they have severely understated the authority for their position. The real authority behind this behavioral scheme is millions of years older than all the religions and all the gods there have ever been. It is the picture of life that gave birth to most of the gods as its projected champions.
Fundamentalism is absolutely natural, ancient, powerful—and inadequate. It's a means of structuring relationships that evolved when we lived in troops of 150 or less. But in the modern world, it's completely incapable of the nuance or flexibility needed to structure humane societies.
This is a great read, and very useful those of us who want to see a better world.