I'll explain why I interpreted it that way. The conversation is about the deportation of immigrants. What I said was said in that context. The reply to my comment was therefore either about immigration or irrelevant to the topic at hand. Grice's Maxim of Relevance tells us to interpret contributions to conversations as attempts at relevance, so I did.
(In reality, I realized that bringing Native Americans into a discussion about immigration and deportation was an attempt to confuse the issues. That annoyed me so I decided to reply as if the commenter wasn't deliberately missing the point).
(In reality, I realized that bringing Native Americans into a discussion about immigration and deportation was an attempt to confuse the issues. That annoyed me so I decided to reply as if the commenter wasn't deliberately missing the point).