<human>:  Where does the right to free speech come from?
<bot>: The right to free speech is enshrined in the First Amendment of the United States Constitution. The First Amendment states: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."