i was mostly with you with your first three sentences but then you lost me with the incorrect comparison of atheist & religious dictator atrocities. first, religionistas usually try to "forget" that hitler was a catholic with an assist from pope pious, another anti-semite.
second, when the atrocity totals are compared on a per capita basis (with the populations of the times), there's no doubt in my mind that the medieval popes were the biggest butchers in name of their gods in all history.
third, the atheist butchers did their dirty in the name of politics for the most part, not religion.
in any case, i think we both can agree, a pox on all butchery be it religious or otherwise.