From the United States Constitution:
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.
These aren’t rights granted to you by the Constitution, they are rights you already have. The Constitution prevents the government from infringing upon them.
➝ Source: constitution.congress.gov