"Obvious symbolism" refers to the use of clear and easily recognizable symbols or objects to represent deeper meanings or ideas in a piece of art, literature, or storytelling. Full definition
and Corbijn can't resist wedging in some thuddingly obvious symbolism (unintentional laughs, thy name is butterfly). (popdose.com)
«We Need to Talk About Kevin» had the opposite problem; it becomes more and more absorbing and interesting as it goes on, but Lynne Ramsay (whose return, my ambivalence about her film aside, was some of the best news of the year) bashes you over the head with crashingly obvious symbolism so heavily in the opening that I could never get back into it. (indiewire.com)
In other more direct examples of Holocaust art, Kiefer employed more obvious symbolism. (visual-arts-cork.com)