I know as a child and young person growing up I was never taught anything about Anger and how to cope with it. I always felt left out...depressed...and sad. No one to confide in.
Parent's didn't seem to think children got angry ( well in my younger day's which were a while ago ). Children were seen and not heard.
As a youngster you may kick..scream...bite..hit..throw things. but it's because either you can't speak yet and / or don't know how to express your feeling's any other way. It is a signal that something is bothering the child.
Anger is not a bad thing. It means simply that maybe our needs aren't being met...our sense of fairness is ignored...or even our rights are being violated.
It is as natural a feeling as any other and also it is O K. They need to be re-assured and learn how to control their behavior (we all do) and not to harm anyone or destroy other's things. To help with releasing the anger you can punch a pillow...jump on an old bed..shred paper..write in a journal..stomp your feet...whatever you need to do that is safe.
It is important not to say for instance "You shouldn't do that" or "that's not nice". they need to be able to express emotions safely...those emotions can cause big trouble later ! !
And what better place to learn to express anger in a helpful way then with the security and safety of their loving parents.
Not all children show anger in the same way. some get irritated, some stress out and some bury their anger ( as I did ). You need to know what triggers what and adjust your strategies accordingly.
Parents need to control themselves also. Try to stay calm and in control,don't give in..then they learn what they can do to win and get their way.
Respect your child's anger and help him transform it. Everyone will be happier all through life if taught Anger is O K Controlled.
Am no expert on this but during my years of childcare I have seen many an angry child go un-controlled or taught it is natural and O K.
G-Ma :o) hugs