Plus, for good measure, the group of trainers will toss in an emotional response for good measure, and try to win loyalty. Fear plus nationalism will get a lot of people to ignore a lot of facts. if Hollywood tried selling you the 9/11 story, you'd laugh them out of the theater. Imagine Leonardo DiCaprio and Kate Winslet kissing when WTC7 just falls for no fvcking reason. You'd scratch you head and demand a reason. Two thumbs down!
but, when you're scared shitless and you're being told by a trusted one that someone who looks different from you in a faraway place did it, you immediately take solace that the threat is gone now, and your protectors are taking care of you. You turn on American Idol and get back on autopilot. Anything which disrputs that peace is suddenly a very big problem and you'll ignore, mock, attack, and fight it, even when it really does make sense.