December 10 is Human Rights Day, the 65th anniversary of the United Nations' adoption of the Universal Declaration of Human Rights. To mark this anniversary, former New Mexico Governor Bill Richardson (pictured) joined Federico Mayor, President of the International Commission Against the Death Penalty, in drawing attention to the steady decline internationally in the use of the death penalty. As governor, Richardson had signed New Mexico's death-penalty repeal bill in 2009. In an op-ed in the Global Post, Richardson and Mayor noted that, in the late 1970s, only 16 countries had completely abolished the death penalty. Today, 150 countries are abolitionist in law or in practice. In 2012, 111 countries supported a UN resolution calling for a global moratorium on executions. The authors stated that countries have ended capital punishment "because experience and evidence demonstrate that the death penalty is cruel, irrevocable and a violation of the right to life. It damages and poisons society by endorsing violence, and by causing injustice and suffering. It has no particular deterrent effect on violent crime, and in fact abolitionist nations often have lower murder rates than those that still execute." Read the full op-ed below.