A University of Hawaii study shows that oppressive tyrannical governments in the 20th century have killed more of their own people than all of the casualties from the 20th century wars combined.  Political scientist JR. Rummel revived and called this term "democide". 

Total Deaths by Democide in the 20th century: 262 million
http://www.hawaii.edu/powerkills/20TH.HTM

Total Deaths by Wars in the 20th Century: 40 million
http://users.erols.com/mwhite28/war-list.htm

From Wikipedia: http://en.wikipedia.org/wiki/Democide

His research shows that the death toll from democide is far greater than the death toll from war. After studying over 8,000 reports of government-caused deaths, Rummel estimates that there have been 262 million victims of democide in the last century. According to his figures, six times as many people have died from the actions of people working for governments than have died in battle.

One of his main findings is that liberal democracies have much less democide than authoritarian regimes.  He argues that there is a relation between political power and democide. Political mass murder grows increasingly common as political power becomes unconstrained. At the other end of the scale, where power is diffuse, checked, and balanced, political violence is a rarity. According to Rummel, "The more power a regime has, the more likely people will be killed. This is a major reason for promoting freedom." Rummel concludes that concentrated political power is the most dangerous thing on earth."

An individual's right to life is what is encoded by the 2nd amendment.  The right to be armed is the last defense that the governed have against a tyrannical government.  The government must never be allowed to infringe it and the right must never be given up.

An individual's right to life is what is encoded by the 2nd amendment.  The right to be armed is the last defense that the governed have against a tyrannical government.  The government must never be allowed to infringe it and the right must never be given up.

well said, jl

More figures here..

"Death by Gun Control" Chart
http://jpfo.org/pdf02/genocide-chart.pdf

Here's the Formula: Hatred + Government + Disarmed Civilians = Genocide

In the 20th Century:

• Governments murdered four times as many civilians as were killed in all the international and domestic wars combined.
• Governments murdered millions more people than were killed by common criminals