And as for Gandhi, MLK, and Churchill, they were not memorialized by Hollywood films in their lifetimes. Sheeple can disassociate the two. But when the protagonists are still alive, the sheeple identify more with the movie version than the actual person. Few could pick Erin Brockovich, the Apollo astronauts, or Jaime Esalante out of a line-up, but they can quote lines from their movies... and virtually all they know about those people is what they learned from those movies.
Also, taking out Gandhi, I don't recall any major motion picture dedicated the lives of the other two, even posthumously.
(Finally, I'm not teaching anymore... I'm in Law School... on the other side of the desk! Yikes!)