The five countries with the highest homocide rate do impose the death penalty. Their muders per population:  41.6 murders per every 100,000 people. However, in the states that do not impose the death penalty have a murder rate of 21.6 murders per every 100,000 people. In the U.S. in the states with the death    penalty the murder rate is  8 murders per every 100,000 people. In states without the death penalty the murder rate is only 4.4 per every 100,00 people.