It's very dangerous to mix up the words natural and habitual. We have been trained to be quite habitual at communicating in ways that are quite unnatural.
What difference does it make to the dead, the orphans, and the homeless, whether the mad destruction is wrought under the name of totalitarianism or the holy name of liberty or democracy?
My religion teaches me that I should, by my personal conduct, instill into the minds of those who might hold different views the conviction that cow killing is a sin.