Dogma is the unshaken belief that something is true, regardless of proof. The term dogma is frequently misused as interchangeable with doctrine. Doctrine is, rather, the interpretation of dogma.
Most frequently, one seems the term dogma applied to religion. In plural, one uses the form dogmata or dogmas. Dogma can be found in virtually all religions. Examples in Christianity of dogma include, belief in God, and belief that Jesus’ conception was immaculate(a Roman Catholic Heresy).
Dogmas in religions like Hinduism express a basic belief in the concept of karma and of reincarnation. A person who does not believe in reincarnation could not shake the faith of someone who believes in reincarnation. In essence dogma derives from faith.
Thus the first dogma, in regards to religion, is the belief in some sort of divine being or beings. Though most religions have diverged from these primal religions, they hold the kernel of truth in the sense that humans want to find the divine, and believe in a divine presence. The belief in a divine presence or intelligence is the foundation of dogma in most religions.
Certain other types of faith are also called dogma. For example, believing in Marxian philosophy, and truly that socialism is the best possible construction for society is dogma. This type of dogma assumes certain factors, such as “the worker is oppressed,” and “religion is an opiate of the people.” How dogma is applied to a society would become political doctrine, or an interpretation of Marxian dogma.
Virtually all schools of philosophy have a set of unproven truths to which they cling. In extreme examples, as per deconstructionist thought, the central dogma is that most text contains multiple contradictions and meanings. Such proofs that are offered, the doctrine of deconstruction, are actually arguments and not proofs.
Dogma also applies to ideas like free education for all. There is an underlying belief structure, that it is good for all children to have free education. This is not based on statistics, but on faith that access to education is a basic right and is valuable to all.
Mostly, however, dogma applies to core truths that are based on faith. People in the Judeo/Christian/Islamic religions don’t believe God to exist, they know he exists.http://www.wisegeek.com/what-is-dogma.htm