I think it might be Freedom of Speech, not really sure though.
Both were born into slavery, and escaped into slavery. While Tubman physically guided slaves along the route to freedom, Douglass wrote and spoke to white audiences about the travails of living first as a slave and then as a black man, subject to the racism of the time.
President Herbert Hoover then ordered the army to clear the marchers' campsite. Army Chief of Staff General Douglas MacArthur commanded the infantry and cavalry supported by six tanks. The Bonus Army marchers with their wives and children were driven out, and their shelters and belongings burned.