Violence is the intentional threat or execution

• physical injury (e.g. hitting, kicking, violence with weapons)
• serious psychological injury (e.g. (cyber)bullying, neglect, exclusion)
• or the systematic exclusion of individuals or certain groups from social participation (e.g. discrimination through racism or homophobia, discrimination against people with disabilities) against the will of those affected.

Put more simply:

Violence can be physical or psychological. Violence can be used against:

• Yourself
• Against another person
• Against a group
• Against a community