Who is being idealized, or honored, in this poster? How do you know?

The communism

Explanation:

The drawing, belongs to a prtopaganda that exalts the communist party and the workers' party, this can be seen reflected in the flag that holds the man, this flag is a modified badge of the classic flag of the communist party.

The communist flag is the one with the sickle and the hammer. These two tools are a symbol of the industrial proletariat and the peasantry, respectively; the fact that they are one over the other symbolizes unity among all workers.

Communism. The man holding the flag looks respectable and strong, and instead of the symbol on the flag being that of of the communist party, it is slightly altered to portray tools, suggesting hard work and prosperity.