The First Amendment to the United States Constitution provides that “Congress shall make no law ... abridging the freedom of speech, or of the press.” This language restricts government’s ability to constrain the speech of citizens. The prohibition on abridgment of the freedom of speech is not absolute. Certain types of speech may be prohibited outright. Some types of speech may be more easily constrained than others. Furthermore, speech may be more easily regulated depending upon the location at which it takes place.