Section 11I. Any person whose exercise or enjoyment of rights secured by the constitution or laws of the United States, or of rights secured by the constitution or laws of the commonwealth, has been interfered with, or attempted to be interfered with, as described in section 11H, may institute and prosecute in his own name and on his own behalf a civil action for injunctive and other appropriate equitable relief as provided for in said section, including the award of compensatory money damages. Any aggrieved person or persons who prevail in an action authorized by this section shall be entitled to an award of the costs of the litigation and reasonable attorneys’ fees in an amount to be fixed by the court.