Um...San Francisco plays a part.
Yes, but San Fran doesn’t produce propaganda films (even close to hollywood’s scale). And where else does the presidental candiates of the democrats go to other than soros, unions..?..hollyweird.
And since unions are shrinking, what would the democrats be without hollywood? SF is not a power brokers as far as I see. They’re a symbol, yes; but without LA, the repubs would win every election for a long-time.