hip-hop narrative. >> he had a world-class hip-hop knowledge on his hands. my first question to him was, ken hip-hop be the vehicle for telling this kind of very large and complex story. he said, i am going to educate you about hip-hop and he did on the spot, pointing out that hip-hop can pack more information than any form of music. he started talking about the fact that hip-hop not only has rhymesndians, internal and all of these different devices that are very important for the extent of the show. announcer: tonight on c-span's "q&a." announcer: during world war ii, the u.s. signal corps produced hundreds of documentaries, training films, and newsreels for the war department. among these are approximately 200 film bulletins created to inform officers and enlisted men about military developments during the war. next on real america, from 1945, evacuation of civilians. a 14 minute bulletin detailing the procedure removing refugees and displaced people out of harms way, by relocating them to temporary housing until it is safe to return home. ♪ >> no school today, it says. no, no school today