What do shakespeare's history plays have in common?
a
they present realistic pictures of what life was like in the past
b
they're not tragedies, so the characters never die
c
they're almost always about kings, queens or nobles
d
they're extremely long

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.