Ok, had a brief conversation with a friend of mine who happens to work as a security officer in Lakeview Square Mall in Battle Creek, and he told me that the mall itself was a "No Firearm" zone. I've since been in there, and didn't see the yellow triangle sticker on the doors anywhere that said "No Firearms". I called him, and he said it's on a sign, posted INSIDE the first set of doors.
I went in, and sure enough, there on the mall's "Code of Conduct" is a "No Firearms/Weapons" bit. Does this constitute a legal no firearms sign, or is it supposed to be posted on an external surface?
Technically, you'd be breaking the rules just by getting far enough in to read the sign right?
Also, there is no graphic or easily read sign posted anywhere. It's just a bit of text, 22 pixels high, arial font. Without knowing exactly where to look, you would never, ever see this sign.