You would like to limit immigration. What would companies like google like look after that? Would you advocate sending the head of youtube back to Iran? What about much of Detroit or New York?

You're conflating some poverty-stricken residents of impoverished parts of the world riled up by political rhetoric with a credible enemy (like a cold war style superpower).

You're arguments make as much sense as labeling all white people everywhere as Nazis because Hitler was a white guy.

Go to Liberia or the Congo or India. You'll see that people aren't civilized, they will eat each other if out of ritual. That was the case everywhere over a 100 years ago. You miss that it's not some kind of inherent badness, they are simply living in a different time, like 1800s europe for example. If children commit crimes they are not convicted in the same manner as adults, that's the correct analogy to take.

As civilized people and members of the global species that is humanity, it's a responsibility to take care of the weak. The problems you've outlined are (global) law enforcement problems. And they are disappearing, as time passes everyone on earth will become modern. Watch some Steven Pinker and see how today is the most peaceful time in human history.

Watch Carl Sagan's blue dot and realize it's not Us vs Them. That's the thinking of pre-space age man.

http://www.youtube.com/watch?v=WibmcsEGLKo (Charlie Chaplin)