In the movie Cradle will Rock, there are several fictional scenes about the real-world mural painted by Diego Rivera for the NYC Rockefeller Building. The mural was subsequently destroyed after a disagreement about Lenin, https://en.m.wikipedia.org/wiki/Man_at_the_Crossroads. In a key scene, Nelson Rockefeller asks Rivera to remove Lenin from the mural:

https://youtube.com/watch?t=68m51s&v=rqPE0YYgwjI

  Rockefeller: This is not a revolution, Diego. This is United States. It's
               not Russia.
  Rivera:      And I am Diego Rivera. Not Frederick Remington.
  Man:         You understand that it is entirely inappropriate to feature 
               a communist leader in the lobby of a Rockefeller Building?
  Rivera:      No! I believe nothing in art is inappropriate. I paint what I see.

Later, in a conversation about replacing "socially conscious" art by funding "abstract" art:

https://youtube.com/watch?t=104m09s&v=rqPE0YYgwjI

  Rockefeller: I wouldn't have had this problem with Picasso or Matisse. 
  Cardinal:    We can control the future of art because we pay for the future 
               of art.  Appoint people to your museum board who detest the   
               Riveras of this world.  Celebrate the Matisses. Create the next 
               wave of art.  You have the purse strings, it's quite obvious 
               you have the power.
  Rockefeller: Cultural power. To pay for the Matisse.
  All:         Celebrate colors.  Celebrate form. Portraits. Countrysides. 
               Men on horses. Sunsets. Nudes.

https://youtube.com/watch?t=107m43s&v=rqPE0YYgwjI

  Cardinal:    Nelson will fund the new wave of art.  A traveling exhibit 
               throughout Europe, highlighting American artists.  
  Mathers:     Non-politcal.
  Rockefeller: Yes. Abstract. Colors and form, not politics.
  Cardinal:    My papers will hail it as the next new thing. Canonize the 
               artist. Make them rich. And soon enough, all artists will be 
               doing the next new thing.
  Mathers:     You think? Something about artists, they always get socially 
               concerned.
  Cardinal:    Sure, but they won't get paid for it.
  Rockefeller: They won't be seen, they will have no influence.
  Mathers:     Rather than starve, they will adapt, it's survival.

The New York City MoMA, https://en.m.wikipedia.org/wiki/Museum_of_Modern_Art#History

"The idea for The Museum of Modern Art was developed in 1929 primarily by Abby Aldrich Rockefeller (wife of John D. Rockefeller, Jr.) and two of her friends, Lillie P. Bliss and Mary Quinn Sullivan ... When Abby Rockefeller's son Nelson was selected by the board of trustees to become its flamboyant president in 1939, at the age of thirty, he became the prime instigator and funder of its publicity, acquisitions and subsequent expansion into new headquarters on 53rd Street."