There are governments and there are governments. Surely you do not mean to imply that there is little difference between the U.S. government and that of, say, North Korea.
What was the "governmental murder rate" in the United States during the last century, and how does that compare with the "non-governmental" rate?
But the discussion here is about governments in general, not the U.S. government in particular, which, historically at least, has been less bad than most governments. But the fact that the world average annual govermental murder rate for the 20th century is 6 times the historical criminal homicide rate in the U.S. is less than a sterling endorsement of government in general.