perjury, slander, libel, and actual threats deprive victims of property. A controversial argument does not deprive anyone of property, and individuals make the choice to be offended by a statement.
An interesting related piece of info: intelligence and respect for free speech is correlative. Indeed, screaming at someone to shut up because you don't like what they have to say is simply infantile.
https://www.youtube.com/watch?v=ISXjXfH5auA