Constitutional Law II
Fighting Words
Fighting words are statements likely to cause the average addressee to fight. They must be given personally, face-to-face though.
Negligence might be enough mens rea.
Fighting words are unprotected speech.
Statutes can outlaw a subset of fighting words as long as that subset of fighting words is not content-based (based on viewpoint). (It gets strict scrutiny, even if the speech is worthless.)