Law professor Eugene Volokh rounds up some cases where courts ruled on unusual name changes (like Talula Does the Hula From Hawaii).
Misteri Nigger, second "i" silent. No, said the California Court of Appeal in 1992, because it constitutes "fighting words": "[I]f a man asks appellant his name and he answers 'Mister Nigger,' the man might think appellant was calling him 'Mister Nigger.' Moreover, third persons, including children hearing the epithet, may be embarrassed, shocked or offended by simply hearing the word.
Ah, the old "them's fightin' words" argument.