Context: Superstitions, dogmas and various kinds of unexamined belief-systems are rife in almost all populations around the world, and all demographic classifications. While some are easily spotted (e.g. cat crossing ones path), others are integrated into our daily lives and therefore difficult to spot (e.g. living in debt as individuals and communities is indefinitely sustainable). Such belief-systems exist in secular domains such as economics, politics, business and technology. Some clusters of unexamined belief-systems or memes are called religions, and these are protected by taboos and restrictions on critically examining them.
Question: Does a specific branch of philosophy study unexamined belief-systems? What is it called, and who are its chief theorists/experts?