Religious Freedom
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof..."
This right among our other precious rights guarantees not just the freedom of worship, which is largely done within four walls, but the freedom to express one's religion in concrete ways in the public square: by works of charity, caring for the poor and homeless, the sick in hospitals and in providing formal education on all levels and assisting victims of private and public disasters.