The freedoms you mentioned are protected by the First Amendment to 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."
This amendment guarantees citizens the rights to freedom of religion, speech, press, assembly, and the right to petition the government.