Troubadour. They used their singing also to earn money, and hopefully get somewhere to lodge for the night.
I believe the answer is: Does the speech pose a threat to the public <span>interest?
One example of such speech would be a speech that call for a destruction of other people's house. This type of speech could either make the target of speech feel unsafe/distress, or make other people actually persuaded to destroy the house. Since both of them are breaking the law, such speech is not protected under free speech.
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1. a. a charter 2. d all of theses 3.e the great migration