This is an interesting take on it: <a href="http://isteve.blogspot.com/2013/05/tsarnaev-todashev-story-has-immigration.html" rel="nofollow">http://isteve.blogspot.com/2013/05/tsarnaev-todashev-story-h...</a>
Actually, eliminating all terror attacks is pretty straightforward - stop the endless sensationalist reporting that turns audience fear into the main event.