They were expressing a normative statement about an observation they made; that you took it as an insult is your problem. You brought up Palestine, then said this discussion isn't about Palestine. Indeed, if you think something is not relevant to the discussion, you should not bring it up in a given discussion.

Because they obviously tried to make it any insult by attacking the person they discussed with.

Who said it wasn't about Palestine? Who even thinks that? We are talking about the protest regarding the Israel-Palestine conflict, right?

So, you think Palestine is irrelevant to the discussion of ... rolling the dice ... the Israel-Palestine conflict