My best answer is UV filters. They are used often to to protect lens against scratches, dust, etc.
Answer:
Art history is the study of aesthetic objects and visual expression in historical and stylistic context. Traditionally, the discipline of art history emphasized painting, drawing, sculpture, architecture, ceramics and decorative arts, yet today, art history examines broader aspects of visual culture, including the various visual and conceptual outcomes related to an ever-evolving definition of art.
Because kids theese days think those rappers are good it has nothing to do with race just there taste in music