The system has a way of convincing people that because they live in the USA they are better off than all other people in the world. This gets them focused on the wrong things, of course, but it has been a tried and true way of deflecting class struggle, something I don't think Marx didn't fully anticipated. The education system, and the whole culture really, has a lot to do with how these feelings are transmitted to each new generation. When parents say their kids were heroes when they died for nothing in Iraq, you can see the power of this.