THIS disclosure at the very beginning of that utterly laughable Wiki page strips it of any validity whatsoever:
List of countries by intentional homicide rate per year per 100,000 inhabitants. The reliability of underlying national murder rate data may vary. The legal definition of "intentional homicide" differs among countries. Intentional homicide may or may not include infanticide, assisted suicide or euthanasia.
Intentional homicide demographics are affected by changes in trauma care, leading to changed lethality of violent assaults, so the intentional homicide rate may not necessarily indicate the overall level of societal violence. They may also be underreported for political reasons. Another problem for the comparability of the following figures is that some data may include attempts. In general the values in these lists should not include attempts except when mentioned otherwise.
Honest question. Do you DUmmies realize that anyone can, and does edit Wiki, and it is about as reliable as your astrology forecast?