What Was True Sons Main Objection To Parson Elder?

Parson Elder agrees with True Son that many white people have been hostile toward Indians without reason or provocation. However, when Parson Elder states that Indians have also committed similar, savage acts against whites, specifically against white children, True Son gets angry and claims that "his people" are respectful of the young.

True Son's objection to Parson Elder here is important to note because True Son will eventually find out that he is wrong and his people can be hostile toward white children.