According to this fascinating story by Derrick Perkins in the Alexandria Times, Barboza and his aunt compiled a list of roughly 5,000 black veterans of the Revolutionary War, and have pushed for a memorial for them on the National Mall.
More recently, Alexandria Mayor William Euille signed a resolution supporting the memorial. Four black Alexandrians served during the war. Barboza told Perkins that the the memorial was about “knowing this history and knowing that these patriots were not just fighting for African-Americans, but every minority group that came here after.”
The full story is here.