That's true also - the actors aren't always the one (in fact are rarely the one) to rule the set. Directors, set managers, grip crew, producers ... there's a lot more ego to a closed set than can come from the biggest name.
We also have to remember a couple more things - actors are people with all their flaws and attributes. Some are all right, some are really not ... most are just trying to make a living. When I've been around anyone of celebrity I always try to treat them with respect but as normal people and I don't try to take advantage of the moment to tell him/her how huge a fan I am or how much I I wish I could get an autograph or whatever. They're people trying to live life with everyone staring at them, spying on them, gossiping about them, manipulating them, selling them, buying them ... you name it.
I'd rather someone use their celebrity to speak out in a manner for which they feel responsible to do so (politics, social awareness) than to just flash their booties for ratings and money, barter their children for the next hit and inspire girls to be tramps, tramps, tramps. Last I checked, Whoopi Goldberg, Tom Cruise, hell even Tom Selleck are all American citizens and they have just as much right to speak about what they think is right and wrong with this country as anyone else.
Yes while doing security and bouncing at places that had some big names or previously were big names, they were people who wanted to get through the night for the most part. Some that were new to it wanted everyone to kiss their ***. They soon found out though that they could get no where if security did let them in or had already escorted them out so now they were in breach of their contract and unable to perform and not get paid. Most places would be like wow get rid of that security guy. I said no problem just do not call me again. Not sure why, but if they were performing they always behaved after that. If they were just visiting, they realized having a number 1 or top ten meant nothing to me and they had to follow the rules just like everyone else.
As to politics, I have no problems with people speaking out. I have a problem with them when they think I am wrong is I disapear. Note: This works with all types who are Political, be they actors or not.