Check out the podcast "Primetime" by Vox. It looks at the relationship between tv and government. There's an episode on 24.

I am not sure about that one. Maybe it was the movie Deep Impact?

But I will tell you an actual and more direct example. The recently elected president of Ukraine LITERALLY is a comedian who was the star of a show where he plays the President of Ukraine! He had very little in the way of policies, but a lot of sharp humor, criticism of Poroshenko and the fact that many people routinely could see him on TV being the “President”!

Nichelle Nichols' character of Uhura supposedly inspired a lot of black girls, including one to try to (and succeed) at becoming an astronaut.

* https://en.wikipedia.org/wiki/Mae_Jemison

Nichelle Nichols was actually disappointed in the way her character was portrayed (she did nothing but sit at her station and answer hailing frequencies) and was going to quit the role, but she was convinced to stay by none other than Martin Luther King Jr[0].

It was one of the first, if not the first, portrayal of a black woman on television in a non-stereotypical, non-subservient role, even if it was just secretarial duty on a spaceship.

[0]https://www.npr.org/2011/01/17/132942461/Star-Treks-Uhura-Re...