All officials of the city, whether elected or appointed, except when a different oath is specifically provided herein, shall, before entering upon their respective duties, take and subscribe the following oath which shall be endorsed upon their respective bonds: "I __________________________ do solemnly swear that I will support the Constitution of the United States and the Constitution of the State of Nebraska, against all enemies foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, and without mental reservation, or for the purpose of evasion; and that I will faithfully and impartially perform the duties of the office of ___________________________, according to law, and to the best of my ability. And I do further swear that I do not advocate, nor am I a member of any political party or organization that advocates the overthrow of the government of the United States or of this State by force, or violence; and that during such time as I am in this position I will not advocate, nor become a member of any political party or organization that advocates the overthrow of the government of the United States or of this State by force or violence. So help me God."
(Neb. RS 11-101) (1973 Code, § 1-302)