Have you ever wondered how two individuals can be looking at the same situation and have completely different beliefs about it? Have you ever wondered why people who have access to the same information and facts can take completely different actions based on those facts? Making mental models and perspectives visual is a super power that will allow you to better understand why people do the things they do. There are so many examples of these polarizations in our society and yet we spend more time arguing and trying to reinforce our own mental model, when what we really need to do is try and understand the mental models of others. Facebook and social media have not helped with the situation as you get inundated with like minded perspectives, simply reinforcing what you already believe to be true.
Immigration, Gun Control, Public Education, equal rights, abortion etc etc. How do we actually have a productive conversation leading to greater understanding? I love to use the Ladder of Inference. 
It is a visual framework used to show how individuals can develop very different beliefs even when experiencing the same system. Going from the things we experience and observe all the way to our actions we can start to understand what happens in our brain thousands of times a day without even consciously thinking about it.
Like any other framework or tool the best way to become familiar with it is to try it out. Take a look at the Ted Ed lesson on the ladder and it also comes with lots of support materials. 
There are also great resources at the Waters center for Systems Thinking. You can find the Ladder of Inference here on their website.
Try not to react, make them visual and lets aim towards a more cohesive society, whether we agree or not, we can at least understand where each other is coming from.