No member of the Fire Department or Police Department shall actively engage in any primary election, convention or election in which any officer in the City, County or State is to be nominated or elected, nor shall such member, directly or indirectly, give or offer to give, contribute or offer to contribute, any money or thing of value or profit to any political committee or party organization to be expended in behalf of any political party, nor to any candidate or candidates for nomination for or election to any office in the City, County or State. The violation of any of the provisions of this section by any member of the Fire Department or Police Department shall be deemed misconduct in office. Any member of the Fire Department or Police Department guilty of misconduct shall be dismissed from the service of the City by the head of his department or by Council, upon charges preferred and proven by any citizen of said City.