Liberalism IS a "faith" whose bottom line premise is the "basic goodness" of human beings. Those who hold that faith "believe" that utopia on earth is possible with the right leadership.
Our founding documents are based upon the premise that even though people are capable of doing good, fallen man is NOT basically good, and therefore men must be protected from each other by a totally objective rule of law undergirding a Constitution that guards absolute moral truths concerning the source of mankind's rights.
Liberalism may involve faith, but it is not a religion. Many beliefs, even philosophies involve faith. Theories involve an element of faith, but they are not religions. To label humanism or secularism as religions and then treat them with the same legal status is incorrect, illogical and just propaganda. Something we rail at the liberals about.