[Nebullis]

You may not pursue me down the street exercising your freedom of speech in my vicinity for a half-hour.

There's a limit to the approach or delivery, I agree. That's where tpaine was going as well. That's independent of the content. A sales-clerk pursuing me down the street for half an hour repeating the message "Thank you, please come again!", would be a menace or a nuisance.

[Nebullis]

Some municipalities have willy-nilly outlawed offensive speech of any kind. Popular applications of those laws are directed against "homophobia" and "racism".