How did DuBois and/or Washington use the ideas of the founding documents to make their arguments in their speeches? Are DuBois’ and/or Washington’s arguments convincing?

I will provide the links to both speeches.
This is based off The Progressive Era of the US.

http://www.americanyawp.com/text/20-the-progressive-era/
(if you want to read to get an insight of the progressive era)

DuBois Speech:
http://explorehistory.ou.edu/wp-content/uploads/2020/01/DuBois.Niagara-Address.pdf

Booker T. Washington:
https://iowaculture.gov/sites/default/files/primary-sources/pdfs/history-education-pss-areconstruction-atlanta-source.pdf