Section 25. Whoever, verbally or by a written or printed communication, maliciously threatens to accuse another of a crime or offence, or by a verbal or written or printed communication maliciously threatens an injury to the person or property of another, or any police officer or person having the powers of a police officer, or any officer, or employee of any licensing authority who verbally or by written or printed communication maliciously and unlawfully uses or threatens to use against another the power or authority vested in him, with intent thereby to extort money or any pecuniary advantage, or with intent to compel any person to do any act against his will, shall be punished by imprisonment in the state prison for not more than fifteen years, or in the house of correction for not more than two and one half years, or by a fine of not more than five thousand dollars, or both.