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.
You would be wrong.
As I noted our religious freedoms are restricted by the courts. Can you erect a cross on government ground? Can you lead a prayer in public school? The first amendment gives unlimited freedom - however the courts restricted it to beliefs, not practices.