Thank you for sharing that! Yes, the sign is an effective instant communicator of both what a person is for and what he or she is against.

Though your neighbors may disagree with your take, it's interesting to note that the culture at-large seems to agree with you, so perhaps there is something to be found there.

Regardless of your respective public signaling, I hope on a personal level, you and your neighbor can get along and perhaps find some common ground?