Simplify the following text for a Grade 9 native English-speaking person.
Original: His mural Man at the Crossroads , begun in 1933 for the Rockefeller Center in New York City , was removed after a furor erupted in the press over a portrait of Vladimir Lenin it contained .
Simplified: Rivera is most famous for his 1933 mural , `` Man at the Crossroads , '' for the lobby of the RCA Building at Rockefeller Center . Before he finished the mural , people saw that there was an image of Vladimir Lenin and other communist images in it .