Organizations may not hold their meetings while the members present are in costume.
14-12.10. Holding meetings or demonstrations while wearing masks, hoods, etc.
No person or persons at least 16 years of age shall while wearing a mask, hood or device whereby the person, face or voice is disguised so as to conceal the identity of the wearer, hold any manner of meeting, or make any demonstration upon the private property of another unless such person or persons shall first obtain from the owner or occupier of the property his or her written permission to do so, which said written permission shall be recorded in the office of the register of deeds of the county in which said property is located before the beginning of such meeting or demonstration.
To discourage members of the Ku Klux Klan from operating within the state, certain measures such as this one were taken. The KKK was known for their use of white hooded costumes during meetings and demonstrations for purposes of remaining anonymous as well as inflicting fear on others. By making these actions illegal, the organization’s power was somewhat weakened.
The fact that this violated the rights of everyone in the state was lost on the legislature.