True threats are illegal. However, "go kill ni*ers for a high score" is not only not a true threat, it's the kind of speech that Brandenburg v Ohio, which esta

True threats are illegal. However, "go kill ni*ers for a high score" is not only not a true threat, it's the kind of speech that Brandenburg v Ohio, which established the current incitement-to-imminent-lawless-action test, explicitly said was 100% protected free speech. Pretty much anything less than leading a mob and telling them who is their next lynching target will be ruled protected speech.