Mass. Gen. Laws ch. 6, § 178N

Information contained in the sex offender registry shall not be used to commit a crime against a sex offender or to engage in illegal discrimination or harassment of an offender. Any person who uses information disclosed pursuant to the provisions of sections 178C to 178P, inclusive, for such purpose shall be punished by not more than two and one-half years in a house of correction or by a fine of not more than $1,000 or by both such fine and imprisonment.