It’s worth looking into non-violent communication. I think the entire internet could use a course.
I’ve been watching some videos on YouTube about it and what I find striking is how violent communication has become.
When someone disagrees, stop and try to understand the emotion that generates in you. That’s the key. When you see you get angry, explore that on your own.
Most people, me included, hear something they don’t agree with, which makes us angry and then without giving any space to the emotion, focus that emotion into a mental response, often sharp and critical, nearly always judgement, all of it violent.
Meditation teaches us to give space to that emotion, which will immediately diffuse it. Then see if a response is even necessary. If a response is necessary, share your emotion, then follow it up with a need.