Yet no one is arrested, even in the act of committing an explicit crime.

CALIFORNIA Penal Code Section 182-185 (False whiskers, what?)
185. Section One Hundred and Eighty-five. It shall be unlawful for any person to wear any mask, false whiskers, or any personal disguise (whether complete or partial) for the purpose of: One--Evading or escaping discovery, recognition, or identification in the commission of any public offense. Two--Concealment, flight, or escape, when charged with, arrested for, or convicted of, any public offense. Any person violating any of the provisions of this section shall be deemed guilty of a misdemeanor.
GEORGIA Code Title 16 - Crimes and Offenses,16-11-38.
(a) A person is guilty of a misdemeanor when he wears a mask, hood, or device by which any portion of the face is so hidden, concealed, or covered as to conceal the identity of the wearer and is upon any public way or public property or upon the private property of another without the written permission of the owner or occupier of the property to do so.
LOUISIANA
Louisiana RS 14:313
§313. Masks or hoods, wearing in public places prohibited; penalty; exceptions; permit to conduct Mardi Gras festivities, how obtained; wearing of hoods, masks, or disguises or giving of candy or other gifts by sex offenders
A. No person shall use or wear in any public place of any character whatsoever, or in any open place in view thereof, a hood or mask, or anything in the nature of either, or any facial disguise of any kind or description, calculated to conceal or hide the identity of the person or to prevent his being readily recognized.
B. Whoever violates this Section shall be imprisoned for not less than six months nor more than three years.
And this goes on...