18 Pa.C.S. § 4953: Retaliation against witness, victim or party.

(a) Offense defined.--A person commits an offense if he harms another by any unlawful act or engages in a course of conduct or repeatedly commits acts which threaten another in retaliation for anything lawfully done in the capacity of witness, victim or a party in a civil matter.

(b) Grading.--The offense is a felony of the third degree if the retaliation is accomplished by any of the means specified in section 4952(b)(1) through (5) (relating to intimidation of witnesses or victims). Otherwise the offense is a misdemeanor of the second degree.