I'd add "musicians" to your list of people who need to challenge the status quo, especially groups like women in country music who have faced vast discrimination in Nashville and on the air. Those women have started an admirable initiative called "Equal Play" to try to overcome it.

The writers' strike in Hollywood is putting up a great fight, too, that I wrote about:

https://medium.com/the-pub/the-writers-strike-helps-all-of-us-4b779e82f79d