Hollywood has to appeal to the broadest audience, and when it comes to most social and economic issues, America is progressive. Because of that, the messages that are in Hollywood movies tend to be, for instance, pro-environment.
It's just funny that Americans have to contend with 2000 channels, and 60 different specific news sources, and the confusion that it creates, and the junk that we get to see is hilarious.
We punch mirrors and we explore our darker selves. No, it's just an amalgam of all newscasters that we grew up with. Sort of like before there was cable, when these people were like gods.