Religion creates community, community creates altruism and altruism turns us away from self and towards the common good... There is something about the tenor of relationships within a religious community that makes it the best tutorial in citizenship and good neighborliness.
"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.