> There is an overall thread amongst "polite" circles of emotional suppression: don't show anger,
Because showing emotions to ones who are not interested in them often leads to net-negative outcomes?
If one person shows anger, people around feel threatened, and based on their nature respond with fear or anger. If people need to have a discussion to find some solution to the conflict, it is much better if they do not feel threatened.
Even if there is no conflict showing unwelcome emotions is like throwing garbage to neighbors' gardens. You would feel better, but then other need to deal with that.
Because showing emotions to ones who are not interested in them often leads to net-negative outcomes?
If one person shows anger, people around feel threatened, and based on their nature respond with fear or anger. If people need to have a discussion to find some solution to the conflict, it is much better if they do not feel threatened.
Even if there is no conflict showing unwelcome emotions is like throwing garbage to neighbors' gardens. You would feel better, but then other need to deal with that.