Speaking from the Delphic rock the oracular voice intoned a name. But who is the man, the one who with his blood-red hands has done unspeakable brutality? The time has come for him to flee— to move his powerful foot more swiftly than those hooves on horses riding on the storm. Against him Zeus’ son now springs.

plot- the main storyline of a work consisting of a chain of events related by cause and effect.main plot- the main story line

the answer is:  

he is voicing feelings shared by all humans regardless of race.

in paul laurence dunbar's poem "we wear the mask," he replicates the words mask and we to emphasize how people in general -not just black americans- hide their true feelings. he suggests the masks cover people's faces and eyes, which are the main parts that display their emotions. he also thinks people's pain conceal behind those masks, so that they cannot see reality and nobody is able to see one another's sorrow.