Jeopardy! is a game show; I enjoy it as such and as a result I don't get bent about much that is presented there. The point I was making about the African-American history category is that Jeopardy! routinely takes this subject which now spans 400 years and narrowly defines it as slavery and the civil rights movement of the 60s, and even more specifically as Martin Luther King, Malcolm X, Harriet Tubman/the Underground Railroad, Thurgood Marshall/Brown v. Board of Ed, and Booker T. Washington. Sometimes there's a Dred Scott or Sojourner Truth thrown in when the writers are feeling adventurous. I was actually thrilled they included Jacob Lawrence; it would be nice to see more fine artists represented in that category.
I admit, given the popularity of rock music, that I too would be surprised someone thought a Guns N Roses song was AC/DC. Mileage varies but I don't see music fandom and the historical representation of an ethnic group as comparable.