I left the US when I saw this in myself. In New York I was constantly filled with rage, and I saw it leading to dangerous places.
What is important to see is the benefit men think they get from it. It provides a kind of tribal unity. They can relate to other men in an ever enlarging community. They can feel a sense of power in being "right". Disagreeing with them only entrenches their sense of being privy to unique knowledge, unique to their community of angry men. To stem the anger, provide them with an alternate place of belonging and reinforce their role as a valuable member of that group (family).
Anger is the sign of impotence. Men and women, liberal and conservative, who live in a nation that values individualism and personal responsibility will inevitably feel alienated and powerless against national and global shifts, especially tectonic movements like climate change, gender roles, and globalization.
It's scary that it's only getting worse, but there is hope.
Since I moved to New Zealand, most of that anger melted away.