People easily become exuberant and angry about politics. On the very rare occasion when my comments get flagged, I don't take it personally.
The answer is, just don't call people names. Make your argument calmly and simply, rather than baiting people into incivility.
You are choosing to believe (one interpretation of) one of the things he said about immigration and not the others. I hope you are right. I am not optimistic that you are right.