Homicide is the result of the specific internal motivations and objectives of it"s perpetrator(s) Not all homicides involve them, but weapons do play a significant role in homicide. Firearms are the most widely used weapons. Accounting for 41% of homicides globally in 2012. Having a gun in the home places women at a higher risk of victimization, most likely in the home where they are more likely to be killed by their intimate partners or family members. All forms of violent crime have significantly decreased in the us in the last 20 years. The type of mechanism used to commit homicide depends on a number of factors including: Socio-demographic characteristics of perpetrator and the victim. The accessibility of weapons and the legislation for controlling them. Results in wide variations in the type of weapons used to commit homicide. American"s most used weapon for killing: firearms. Asia and europe : other category such as blunt objects, poisoning, strangulation, and physical assault.