The First Amendment of the U.S. Constitution says, "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." Why did the states want to ensure the Federal government did not establish a national religion? And why were the freedoms of press, speech and assembly so important to the Founding Fathers? Watch the video above from TIME to find out. (Produced by TIME Video)