Especially to educate police.
I usually e-mail, and/or send anonymous letters to the City Attorney, City Secretary, Mayor, City Police, Each City Council member.
You can create a new G-Mail/Hotmail/Yahoo account just for that and any replies and keep it ...
Anony Mouse.
See viewtopic.php?f=23&t=42833&p=516728#p516728" onclick="window.open(this.href);return false; (Signs removed)
and viewtopic.php?f=23&t=41993&p=505789&hilit=Mayor#p505784" onclick="window.open(this.href);return false; (Letter/e-mail educating about signs, which were later removed)
Massive flood of e-mails isn't needed, just putting them "on notice" is good though. Then you have proof if you need it for a civil rights suit, but that thread above they even allow carry at council meetings now

I doubt signs would not be posted at gun shows on city property, but educated police are a good thing to have.