Which self-taught freethinker broke from British literary form and content traditions to write poetry in this characteristic style?

Beat! beat! drums!—blow! bugles! blow!
Make no parley—stop for no expostulation,
Mind not the timid—mind not the weeper or prayer,
Mind not the old man beseeching the young man,
Let not the child’s voice be heard, nor the mother’s entreaties,
Make even the trestles to shake the dead where they lie awaiting the hearses,
So strong you thump O terrible drums—so loud you bugles blow.

Question

Which self-taught freethinker broke from British literary form and content traditions to write poetry in this characteristic style?

Beat! beat! drums!—blow! bugles! blow!
Make no parley—stop for no expostulation,
Mind not the timid—mind not the weeper or prayer,
Mind not the old man beseeching the young man,
Let not the child’s voice be heard, nor the mother’s entreaties,
Make even the trestles to shake the dead where they lie awaiting the hearses,
So strong you thump O terrible drums—so loud you bugles blow.

anonymous · Answer

A.) Nathaniel Hawthorne 
B.) Walt Whitman 
C.) Ralph Waldo Emerson
D.) Emily wingspaninson

anonymous · Answer

Never Mind i found it haha :P it is Walt Whitman