Well, it's usually referred to as your right to vote. That's kind of the whole reason behind voting. You elect people to represent you and they are your voice (supposedly, in theory, that's how it's supposed to work).So how does rational debate about particular social points take place. If you can't even get a well constructed argument into a public arena to challenge particular beliefs then what is the point in the first amendment?
If you have an issue, you write to the appropriate representative.
Of course there can be special issues which people feel can't wait to go through proper channels. You do have the right to peaceful assembly, but that doesn't mean that you can assemble anywhere, anytime, for any reason. You want to have a rally in a public space? You contact the proper authoriities and request a permit. They will approve the time and place and provide the necessary police protection. This may be just to route traffic, or crowd control, etc...