How do you teach safe ways to express anger?

I grew up in a family where kids were not allowed to express "bad" feelings as anger, disappointment, to cry, fear etc were "disrespectful" (but mostly inconvenient really). I want my child to be emotionally healthy but I...don't know how.How do you teach that it is okay to be angry, disappointed, etc but that you can't express those feelings in socially-inappropriate ways? In the end, you can say it is a behavioral question.At 4 years old, my son can identify and verbalize his feelings. "I AM ANGRY!" and all that. He doesn't hit or throw toys in anger, which is good. On the other hand, he doesn't cross his arms and sulk or slam the door to his room. He basically gets mad and SHOUTS about it.My personal therapist says there is nothing wrong with this - he thinks kids should be allowed to scream. I don't think this works out in practical reality though. A child cannot go through life screaming at the top of his lungs at ever injustice. The other day on a playdate, the friend's toddler sibling knocked down my son's lego building. My son screamed at the top of his lungs - at the baby! I took him aside and said, "yes, how frustrating it is that your lego building was knocked down but babies don't know better - they are just trying to play too. And don't scream at babies."We watched Daniel Tiger but all the songs, stomping, deep breathing, whatever don't make an impact in that first reaction of anger. via /r/Parenting https://ift.tt/2zYaGKJ