Unfortunately, as the US is a democracy the people who support Bush do so because they agree with his policies, which makes them just as responsible. Don't forget, this crap has been going on for a while and it actually helped Bush get re-elected.
Yep, but that's mainly because roughly half of the people are more stupid than average. And the presidential election system in US is retarded - if a direct election would be used, Bush wouldn't have been elected in the first place.
Besides, I cannot actually blame people for wanting to believe what their leaders tell them. They were lied when the war in Iraq was being started, and they have been repeatedly lied since then, and perhaps there is a hope that they are becoming disillusioned to it, because apparently it is becoming more and more clear to US populace that Bush as a president was a mistake... albeit the fact that it could also be argued that bush-bashing is just popular and the pack-minded people just jump into the train.
The reason why it's so easy for average person to believe Bush (or authority) is because he (or his speech-makers) are very skilled in using the "holy trinity of values" (home, religion and patriotism) against the people who have those values. Even though closer inspection reveals that the attack to Iraq actually has nothing to do with protecting the US of A or it's people, it's easy to believe that it does if the president says so.
It's the same thing with "would someone think of children"... if you disagree with the person who uses that as support for their argument, the general opinion easily is against you even though the argument supported would have nothing to do with children's welfare in actual reality.
As to by-passing the chain of command, what the hell are those people supposed to do when the chain of command immediately above them quite obviously condones to the illegal practices? If I would encounter stuff like this I would definitely inform the highest authority I could reach about it. Assumed I would decide to tell about it and not just backpedal swiftly away from the business in hand and leave them to their own devices.
In military, chain of command is of more importance. For civilians, not so much.