What do you know today that you didn't know yesterday?

[Anomalocaris]

Religion is the sole reason there were right and wrong neighborhoods.

It was as much politics as religion. If it were possible to remove the religious aspect, there wouldn't be much difference in the butchery.

Boru

Religion and politics coevolved,   The very reason why there were different religions so there could be right ones and wrong ones is to a great extend the consequence of politics.   Admittedly most of that politics occurred far from Ireland.  

Even coevolved is not exactly right.    Religion is politics, and unlike war, not even politics by other means,    It is just pure politics by conventional means, but with unusually heavy emphasis on the particularly deceitful, cynical, and exploitative of the means normally used in the political tool chest