Wash. Rev. Code § 9.27.015
Interference, obstruction of any court, building, or residence—Violations
Whoever, interfering with, obstructing, or impeding the administration of justice, pickets or parades in or near a building housing a court of the state of Washington or any political subdivision thereof, or in or near a building or residence occupied or used by such judge, juror, witness, or court officer, or uses any…