Sometimes, it's good to hear that people like myself are not crazy for thinking what we know to be true. I think you're spot on when you say that most people just can't get over the fact that THEIR government might possibly be complicit in something as horrendous as 9/11.
I try to talk to family members about corruption but they just tune it out. I see it the moment I mention anything political related. It's very hard not to get upset at them, yet, it's hard to "respect their opinion," especially when that opinion comes from mis/disinformation i.e. CNN, AP, BBC, Fox, etc.
In my experience, most people just don't care. Their worried about losing their job or the next iPhone coming out or who got Chopped...on Chopped.
If you don't know your rights, you don't have any.