The Missing Sign

A curious fact: There is no No Trespassing sign posted at Fletcher Landing, the place where the police say that I trespassed.

If I were a legitimate property owner experiencing trespassing problems, posting a No Trespassing sign would be the first logical action.

In fact, if I were a libertopian trying to create bogus facts on the ground, I'd wallpaper Fletcher Landing with No Trespassing signs.

Yet no sign. I speculate that the libertopians have been compelled not to post a No Trespassing sign.

If there are any attorneys out there, I'm all ears if someone can inform me...

If and when I am charged with trespassing, who will I have trespassed against?

Can no trespassing be enforced when there is no sign posted?