Artist are making a statement using imagery, not words so it is a language because these images are common to us and there is a meaning, the way we get meaning from an English sentence. If you can read it you have learnt another language.

(2:49 Minutes)

These artists in university explain a school project that was controversial.

(1:40 Minutes)

Another artist, explains his own piece in a gallery.

(0:51 Minutes)

The oldest art is about 40,000 years old.

(3:05 Minutes)