Pop Culture?

The term "pop culture" seems to be the most egregious oxymoron in current use. When I think of culture, things like fine art, classical music, and poetry spring to mind, not Britney Spears or Hollywood movies. Could this mean that when something becomes too "popular" it loses its sense of "culture"? Van Gogh and Mozart are pretty well liked and this hasn't lowered their cultural value. More likely, the masses really are too stupid and lazy to appreciate the finer things in life, instead preferring to numb our inactive minds with the drivel we're fed from television. It's a sad state of affairs.