It will encourage more people of color to be more involved in polotics and show that even a person of color or someone has came from a poor society can reach to the top as well as any other people can.
of course they wouldn't understand if its not in their language. you would need to sign to them in their native language for them to understand. if included common gestures in ther languae mixed in with ASL it wouldnt make any sense to them.