I took civics about 4 years after 9/11... It was an exercise in understanding governing ethics/effectiveness.

You'd be surprised, or perhaps disturbed, by how many kids put "is a Muslim" on their list...

A very common mantra you'll find repeated everywhere if you visit the US is 'If you see something, say something'

They have it on posters in transit hubs, stadiums, airports, all over the place.

Americans live in this constant state of paranoia about things like this.