Here's what I said on this issue on the Chicago filming thread:
"I have a whole lot of respect and appreciation for the people who have been getting these scoops and spy reports for us. But Mike is absolutely right. You can't hold it against these security guards for DOING THEIR JOB.
Look at it this way. You get thrown out, and you're mildly annoyed for a few hours because you didn't get to see sets being put together for a few hours, or maybe a glimpse of one of the big actors.
You DON'T get thrown out, and the security guard's job is at stake. If they've been told by one of the higher-ups in production to get rid of you guys, do you seriously think they should go against orders and let you stay just to be "cool guys"? You gonna show your appreciation to them by paying them the money they lose if their inability to do their job gets them fired?
It's a similar mentality to what I deal with. I'm a University student, and I work part-time at a supermarket to help supplement my income. And we're looked at like major a-holes because we don't let kids buy alcohol. Aw, we're not "nice guys", we won't cut these kids a break and let them have their fun. But cutting them slack would put OUR jobs in jeapordy.
Don't begrudge people for doing what they're told to do. By all means, if somebody makes the decision to take a risk and let you hang around, when they're within their right to ask you to leave, then stay and report back. But show enough respect to these guys to appreciate the ball is in their court when it comes to such a decision, not yours. You have no stake in the matter, they do."
And to add to that:
Really, all you guys complaining about what bastards security are...do you have ANY idea how good you have it?
If Warner Bros wanted to, they could probably seal up the whole area, make it like Fort Knox, and not let anybody anywhere near it. But as it is, they've left it pretty open. People have been able to walk around and look at the sets. We've had various people getting photos with the crew, some of the cast, and even Nolan himself!
And when the fans are given all this, are they grateful? No. They get all that, and then security say "Okay, we've given you all this, you've had a good time, but now could you please move away while we get down to business?" And after being given so much leeway already, are they respectful to their request? No. They respond with "I'm not moving! I have a right to be here! This is public property!" and act all obnoxious. No wonder security have to resort to "intimidation" to make them finally take the hint and leave.