Hope means hoping when things are hopeless, or it is no virtue at all. . . As long as matters are really hopeful, hope is mere flattery or platitude; it is only when everything is hopeless that hope begins to be a strength.
When you play a character that exists or existed, there's a stronger responsibility that you have. You owe that person and then you owe the family, you owe history, you owe the victims, the victims' families.