That's not obvious to you? I mean there certainly other, but that's a big reason for it. Engineered culture clashes counting on programmed tribalism/nationalism in the vast majority or people to react as expected. Problem-reaction-solution. And the solution ALWAYS make life worse for everyone. We gonna get all sorts of digital biometric bullshit thanks to the 'do something' mentality over the border. The plans are already in motion. Just waiting on Trump's (s)election for his cult to beg for a wall. All we will get it. All cuz of brown people. Like The Patriot Act. Then, like the Berlin Wall, it will be used to keep us in. Problem-reaction-solution.