Wash. Rev. Code § 77.15.360
(1) A person is guilty of unlawful interfering in department operations if the person prevents department employees from carrying out duties authorized by this title, including but not limited to interfering:
[ 2014 c 202 s 308; 2007 c 337 s 3; 2000 c 107 s 243; 1998 c 190 s 61.]
Findings—2014 c 202: See note following RCW 77.135.010.
Intent—Finding—2007 c 337: See note following RCW 77.12.071.