I was going to write this on anger management, but I've decided to do this instead. This is open to debate in the comments, so feel free to debate this :)
I have had personal experiences with extreme anger and hatred. Until just a few months ago, I would get riled up at the mere thought of some people. But what really is anger? Most people would answer "An intense feeling of hatred," or "Well... I don't know, it's like when you shout a lot and scrunch up your face." Firstly, Where does anger come from? Usually people, or things. When something doesn't go your way, you'll feel upset or ANGRY. If someone is shouting at you, or is doing something you really don't like, ANGER surfaces. But anger isself stems from conflict. Whether it's something petty, like a 6 year old cutting in line, to all out war, people will get angry. It's in our nature. Anger is an emotion, that burns with an intensity close to love. But anger is harsh, dangerous. The animal in all of us. It clouds the ability to think rationally, but gives us a strength as well. Love, which is peaceful and caring can also do such things. It clouds our better judgement to save what or whoever we love. It grants us strength in times of need. Both provide a burning determination. So, in a way, anger is like a harsher version of love. Or perhaps, just another side to love. The defense of things you love.
Anger can also be an effect of depression. The self loathing generated from constant bullying causes a retreat into thyself. Building walls around the core of their being. Learning to hide their emotions, their pain. Until they can't take it anymore, and begin to crumble. Their life spirals into darkness, and death is their only retreat.
I guess what I'm saying is there are multiple kinds of anger. Righteous anger, which grants strength to protect or avenge, and Self anger, which saps the strength of your soul.
Wow that got depressing.... Maybe I should pop over to the depression forum ;)
Now, I open the question to you, as this is all from my own experiences and knowledge. What do you know about anger, and how do you interpret it? What is anger, to you?