I think it was in the 80s, maybe when Crazy Eddie was still doing his thing, I happened to be in NYC when a "Mitz-Van" went by.

Something about religious dogma being delivered via roof-mounted megaphone, it just makes it that much less believable. It makes it that much more absurd.

If there is a G-d that wants my attention, that is not the way to get it.
That convinces me that your followers are insane.

Specifically, since they've got a megaphone and you don't, they're authoritarians.
It runs in the breed, of those who have G-d on their side.
Though of course it's a taught behavior, nobody is born believing in G-d.

At least not G-d whose whose dudes ride around Brooklyn with a loudspeaker on their roof.

I'll allow that a person could innately believe in some sort of common spirituality that connects us to existence in unseen ways.