Religious freedom is a constitutional right. As enshrined in the First Amendment, it includes two complementary protections: (1) the right to religious belief and expression and (2) a guarantee that the government neither prefers religion over non-religion nor favors particular faiths over others.
Individuals, families, theologians, and communities have constitutional rights to worship (or not worship) freely in private and public. But even though religion is constitutionally protected in the public square, it is not a proper subject for government bodies — from local school boards all the way up to the U.S. Congress.
The ACLU of Delaware has long defended the religious freedom of individuals, families, and religious communities, from Christians to members of minority faiths.