Anti-Theism

[mordant]

At least once a week, even here in NZ, I have someone knock on my door, try to approach me in the street, drop stuff in my mailbox (don't they know what "addressed mail only" means?), or shout at myself as part of a crowd about their deity.

I don't know about NZ but here in the US, it's actually illegal to do that. In fact I think the exact law is that only postal service employees are allowed to put anything in there, stamped or otherwise. You might complain to your postal service and see if there's recourse. Here, they will send a cease and desist letter to the sender (if there's a return address) and if they don't comply, will prosecute them. And I believe it's a federal crime.