Hmmm.
US belief system has cost the lives of several million people since World War II.
These sources provide comprehensive analyses and estimates of the human costs of the conflicts in which the US has been involved:
Costs of War Project: Brown University
https://watson.brown.edu/costsofwar/
Iraq Body Count: Iraq Body Count
https://www.iraqbodycount.org/
Lancet Study on Iraq: The Lancet
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(06)69491-9/abstract