The psychology of tribalism has functioned this way for probably as long as our species has been able to form complex thoughts. The biggest novelty is that the tribes now have more people and span across larger regions of land because of transportation and communication technology. The emotions are the same as ever.
Other comments mentioned being friendly, listening to their point of view first, and calmly offering nuggets of information that will resonate with their prior biases and give them new ways to talk about the topic to the people they hope to impress. I support this method because I used to be very argumentative and this way has worked better for me and I see most psychologists and therapists recommending this communication style.
"For most of our evolutionary history, our ancestors lived in tribes. Becoming separated from the tribe—or worse, being cast out—was a death sentence.
Understanding the truth of a situation is important, but so is remaining part of a tribe. While these two desires often work well together, they occasionally come into conflict.
In many circumstances, social connection is actually more helpful to your daily life than understanding the truth of a particular fact or idea. The Harvard psychologist Steven Pinker put it this way, 'People are embraced or condemned according to their beliefs, so one function of the mind may be to hold beliefs that bring the belief-holder the greatest number of allies, protectors, or disciples, rather than beliefs that are most likely to be true.' "
Why don't facts change our minds? This article explains the logic of false beliefs and proposes a better system for constructive conversation.
jamesclear.com