Why might someone want to protect the ancient moai on Easter Island for future generations?

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Someone has to protect the "ancient moai" on Easter Island because they represent the ancient ancestors of the Polynesians. They also serve as repositories of the sacred spirits of the ancient ancestors. They are believed to watch over the people on Easter Island that's why they are faced towards the villages.

Explanation:

The "moai" are also known as "Easter Island heads" because they appear to have disproportionately large heads compared to their bodies. Besides being considered as repositories of scared spirits, they also symbolized the Polynesian's authority and power. These figures were carved between 1250 and 1500.