Violent people are deemed mental; Do you think this is a fair denomination ?

Here's the definition of "mental disorder" from the Diagnostic and Statistical Manual of Mental Disorders (DSM), the leading reference on the topic.

"A mental disorder is a syndrome characterized by clinically significant disturbance in an individual's cognition, emotion regulation, or behavior that reflects a dysfunction in the psychological, biological, or developmental processes underlying mental functioning. Mental disorders are usually associated with significant distress in social, occupational, or other important activities. An expectable or culturally approved response to a common stressor or loss, such as the death of a loved one, is not a mental disorder. Socially deviant behavior (e.g., political, religious, or sexual) and conflicts that are primarily between the individual and society are not mental disorders unless the deviance or conflict results from a dysfunction in the individual, as described above."

In other words, exhibiting violence doesn't mean you have a disorder. No singular symptom or behavior does. Mental disorders usually require the three Ds (Dysfunction, Distress, Deviance). 

So, using that...

1) Does your tendency toward violence/ anger/ aggression cause dysfunction in your life? Had it made it difficult for you to have relationships, hold down a job, and carry out normal everyday behaviors? 

2) Does your tendency toward violence/ anger/ aggression cause distress in your life or the lives of those around you?

3) Does your tendency toward violence/ anger/ aggression deviate from societal norms? 

Chances are, the answer to all three of those questions is "yes," so it can be determined you have a disorder of some type because you have a symptom that is damaging to you and those around you. The question then becomes identifying what's causing the symptom and determining how to treat it. 

Episodes of violence/ anger/ aggression are linked to all sorts of disorders and each one has different causes. Actually, there are usually many causes for any given disorder. For example, the amygdala, which is responsible for your fight or flight response, could be smaller or larger than normal, this impacting how reactive it is to stimulus. Although newer research indicates the amygdala may be able to regenerate some over time, there's generally no cure for this. Ergo, the individual usually has to understand the nature of their condition and adopt behavior to control it. Emotions are further ruled by hormones. So, if your body produces more or less of a specific hormone than normal or processes it differently, then it would result in behavioral abnormalities. There are often medications for this. In a way, you can liken it to diabetes. People aren't diabetic because they choose to be. They'll be diabetic whether they want to be or not. Their bodies either don't produce insulin or don't absorb it well. They have issues with their pancreas. Medication is usually a component of treatment.

On the flip side, therapy is often helpful too. If the person is willing to recognize that their behavior is harmful to themselves or others, they can learn to control it to varying degrees. For some, things like meditation can help. For others, learning to sense when an episode is coming may help. For example, if the anger response begins boiling up, and the person is aware of it and sees it for what it is, he can focus on breathing exercises or something similar to restore the body's calm state quickly. People with anger issues can work on their triggers too. A lot of this comes down to understanding the triggers and learning/ accepting why they shouldn't be triggers. i.e. Does extreme anger bubble up when a neighbor plays loud music to the point you want to go deck your neighbor? Take a moment to put yourself in the mind of the neighbor. What are logical reasons why the person might be doing this? Maybe they don't know what they're doing, maybe they're deaf and don't realize it's loud, etc. If you can internalize what the other party is feeling, then you can empathize with them. The anger response should diminish. There are a million therapeutic tools to cope with anger responses. This is only a very small sampling. A good therapist would walk you through which methods are right for you and your situation and guide you through methods to cope or retrain your brain/ behaviors. 

The reality is, people who exhibit violent behaviors are a danger to themselves and to others. The end goal is not to "lock them up" or at least it shouldn't be. The goal is to get control of those behaviors so the person can live a normal, healthy, and full life. But, you can't even begin to head down that path while you're still angry about the injustice of a diagnosis. The diagnosis is the first step toward wellness. The rest of the journey requires your buy-in and full attention. 

it sounds fair to rne