Horn Honking as Protected Speech?

The state supreme court in Washington today hears oral arguments to decide whether honking a car horn in a residential area is protected free speech.  The case arose out of a neighborhood dispute when a woman parked her car outside a neighbor's home and honked her horn in retaliation for complaints she received about noisy chickens in her back yard.  The woman was arrested under an ordinance that apparently qualifies horn honking as a public disturbance unless done for purposes of public safety. 

Arguments in State v. Immelt are broadcast live, here, at 1:30 pt. 

-Kathleen Bergin