Each individual may belong to many groups and their moral codes may differ, thus causing a dilemma. Art comes from the human desire to communicate feelings, beauty, and ideas through sensual mediums. Art is the manipulation of our world to convey these concepts. The mediums, themselves, would be too numerous to list here. From paintings on a cave wall to music to virtual reality, humans have a highly developed artistic ability.
Art also reflects the mood of a society.
It is a good indicator of a healthy or decrepit culture. All species communicate amongst themselves. Humans have evolved with the ability to do so through a complex system of vocalizations, gesticulations, and expressions, which are able to transmit highly complex thoughts and feelings. The vocalizations, or languages, have co-evolved along with the human species. Much of the groups abstract reality is transmitted through language.