Dear @chbartist
If we hope that people understand our thoughts without telling us, then this is utterly stupid, because nobody's mind is written on the brain. Though the expressions and behaviors can be guessed, but accurate estimation is difficult. Some people are known for their unsolicited comments, although more mental injury reaches them but there is no such thing as repentance. I think this is the best way to display anger, because it hurts quickly, but later it becomes normal. This process works like a word and weapon wound. On the contrary, some people try to present anger in a vague form, which is reflected in the different postures, activities and their behaviors of their faces. This kind of anger damages itself rather than harm others.