I relation to your point, allow me to look at some numbers. In 1986 42% of adults attended religios services in the avergae seven day period. This climbed steadily until 1991 when in peaked at 49% (research by the Barma group). During that same period murder rates rose from 20,610 in 1986 to 24,700 in 1991. Forcible rape went from 91,460 to 106,590 in the same period. Other types of crime showed similar increases (Source is the FBI uniform crime report).
So, when we see an increase in religious activity, we also see an increase in crime. What does that tell us?
Nothing. That those increases happened at the same time tell us nothing about religion or imply that it is a cause of increased crime. The same applies to the atrocities committed in what you claim to be a secular period of history. They tell us nothing aboiut secularism.
Also, Nazi germany was not all that secular, nor were the agressors in WW 1.
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