Violence is the use of force or power. According to the World Health Organization, it is divided into three broad categories: self-directed violence, interpersonal violence, and collective violence. The question of why violence is inflicted upon oneself or someone else is open to question. Could we categorize all violence as bad, or is some violence necessary to prevent people from committing punishable crimes?
Yes, violence is always wrongShow moreShow less
The idealistic approach to ethics of violence is that no matter its reason, it can never be justified, which is why it is always wrong.
Self-harm is associated with psychological stresses and disorders such as depression, social anxiety, and PTSD. 17 percent of adolescents and 13 percent of young adults have engaged in self-injury at some point in their lives. 
People who engage in self-harm often have poor coping skills. It is how they deal with psychological pain and manage difficult emotions. In not know how to regulate or understand their emotions, such as feeling worthless, anger, loneliness often contributes to their need to self-harm.
Such type of violence is wrong, but there is a valid reason why it happens in the first place. With rising awareness, offering help, advising doctor's counsel, such violence can be prevented. 
Self-harm is often a cry for attention. Not all those who engage in self-injury have deep psychological issues. The influence of online images on self-harm has promoted it as a trend in young people rather than serious issues. According to evidence, 51% of young people who report self-harm had previously engaged on the internet searching for self-harm related content. 
In such cases, it is the exposure of media on the Internet that leads to self-injury rather than not having good coping mechanisms.