The body count argument.

It goes like this....

"Theocracy is shitty"

"Oh yeah? But atheism/secularism/humanism has killed millions more than religion, blah, blah, blah".

You know what the answer should be, instead of dismantling the tiresome bullshit factual errors involved with attributing say, the Nazis to fucking HUMANISM?

Point out what a dishonest and asinine argument is to put forward as a DEFENSE of religion "yeah, religion is horrible, but your philosophy is WORSE".

Really?
Really, scumbag?
You'll take on that theocracy is utter shit, not even bother to defend it, and play "body count"?
You're trash.
Complete and utter trash.

Use words to that effect.
It's appropriate.

I mean really...
"Well, punching your burka-ed wife around the kitchen for not having her clit lopped off may not be nice, BUT..."

But nothing, fuck you.
Pork face.