Factories in Diego Rivera's work

Diego Rivera 1932 - 1933
Do you know Diego Rivera?
He painted this mural in the 1930's.
What is this painting about?
Do you remember Charlie Chaplin's movie?
 Is it similar to this painting? How?
Why did Rivera include factories in his murals?

Factories in fiction

Factories have appeared in many fiction films, TV series and books like Charlie and the chocolate factory, Modern Times, Monsters Inc.The Simpsons,etc.
Do you remember any other films where factories are important in the story?

Charlie and the Chocolate Factory (Main Titles)

Factory scene from Modern Times

Do you know Charlie Chaplin?
Where is he from?
What do you think about the movie?

What do you think?
Is motion research important to industrial engineering?
Why?
Was Gilbreth´s work important?
Please read the articles linked below
http://en.wikipedia.org/wiki/%C3%89tienne-Jules_Marey
http://en.wikipedia.org/wiki/Frank_Bunker_Gilbreth,_Sr.
http://en.wikipedia.org/wiki/Lillian_Moller_Gilbreth

Time and Motion - Ghost Dances No14

Gilbreth Time and Motion Study in Bricklaying