No municipal police officer, special police officer, constable or other municipal law enforcement officer may wear or display a uniform or badge that identifies the officer as a public law enforcement officer at the site of a labor dispute, strike or lockout, except while on active duty in the public service and while traveling to and from public work.   [PL 1987, c. 737, Pt. A, §2 (NEW); PL 1987, c. 737, Pt. C, §106 (NEW); PL 1989, c. 6 (AMD); PL 1989, c. 9, §2 (AMD); PL 1989, c. 104, Pt. C, §§8, 10 (AMD).]