POTD: Behave?

POTD: Behave?Behave?
Helena, Montana

Here’s another sign in Helena that got me kind of in a quandary. Why would¬† someone create graffiti that says “behave”? I mean, assuming it really is graffiti (meaning it was illicitly placed on this post) then to have it say “behave” is hypocritical or at least oxymoronic I would think.