My 14-year-old son has a punching bag & he knows he can "go at it" when he is angry. It helped a lot until he broke the punching bag stand!
Get them involved in sport if you can. It is one of the best ways to get rid of pent up energy.
Teens are more hyper and emotional than other people. Its because they started viewing world in some different angle. Awareness and training is the thing which can make them to control their anger.
Parents should behave like best friend with them and then slowly slowly should ask their kid to no yell or get angry. If we go scientifically then so many things effects the teen behavior, like diet, companionship, social relations etc.
Anger is a spiritual matter and comes froma choice and consequence of good or baddecisions. It is not bad to be angry. It is bad when you let it "CONTROL" WHAT YOU SAY AND DO.
You can rear my hub:"Parents and Children" forfurther knowledge.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.