.... The professional individual performers probably come mostly from non-conventional backgrounds where they weren't forced into "honest work" or a "real career" and are probably from very liberal families. Its either that or somehow media people are very empathetic in learning how to do their profession and as a result they believe that everyone matters.
On the other hand, those who manage and bankroll these endeavors are probably libertarian-leaning conservative Republican ivy league/BigTen or at least name-brand MBAs whom many probably see "traditional values" as bad for business but think that America's business is business and that any distraction from the bottom line makes it harder for them to work. However, as in almost any other circle, there are always a few religious nut jobs.
To also tell you the truth, I was surprised to see how relatively popular Romney was in 2012 amongst Hollywood's A and B lists. He even won an endorsement from Jenna Jameson and one of Nicki Minaj's alto egos!
In other words, Hollywood is like the rest of the "liberal media". Its as liberal as the John Galts who own it let it be.
You have it. The stage has been a profitable necessity for a long time -- or at the least a civic ritual. But it offers nothing tangible as do agriculture, resource extraction, and manufacturing.
The impresarios of stage, screen, and studio know enough to avoid making blatant propaganda unless the message is already popular (as in, "Smash the evil Nazis/J*ps" of WWII) to begin with. Entertainment is more profitable than didacticism. So profit comes before the message and is to be had through entertainment.
I am reminded of a scene in
Funny Girl in which Fanny Brice (Barbra Streisand) has made a mockery of prudish sensibilities in her "Beautiful Reflection (of every man's affection)" in which she asks Florenz Ziegfeld what he thought of the successful act.
"I hated it", said Ziegfeld, "but the audience loved it! Do it again!" Such guides entertainment.
If there is money to be had by skewering right-wing ideology, then even FoX Studios will do it. Spoofs of FoX News have appeared on
The Simpsons.
OK, maybe American plutocrats despised the Soviet Union -- but they were glad to make trucks for the USSR in its factories for use against the Nazis -- for profit, of course.