The mention of God in the preamble of the Constitution (and later on the Brazilian currency) was opposed by most leftists as incompatible with freedom of religion because it does not recognize the rights of polytheists (like the Amerindians) or atheists, but it has not been removed so far. The only State Constitution that does not refer to God is the one of Acre. The Supreme Federal Court has ruled that this omission of the protection of God was not unconstitutional since the preamble of the constitution is simply an indication of principles that serves as an introduction to the constitutional text and reflects the ideological conceptions of the legislator, falling within the scope of political ideology and not of the law. Therefore, the preamble which is not actually a part of the supreme law, has no judicial validity whatsoever and cannot impose obligations or create rights.