I think we have lost the art of dialogue. We no longer communicate to be understood but rather to be right. We have gotten into the horrible habit of assuming if and when someone doesn't agree with us they are somehow horribly misguided and in some cases people get aligned into the category of human garbage.
We rarely take the time to understand a topic from both sides but merely create for ourselves an echo chamber and generally only engage in the things and resources that affirm our world views and opinions thus we never really question our own beliefs and why we believe them to be true and in extension are less than gracious with other's views.