Whether you call since 9-11, the Bush Era, the 9-11 Osama Era or whatever you call it, it's now over. There have been many extreme changes that affected everyone on earth like this. Another one was the collapse of the Soviet Union, The 2007 and 2008 never ending recession, and the Bay of Pigs, Cuban Nuclear Missile Crisis, and the Assassination of JF Kennedy, the Bobby Kennedy and then Martin Luther King. All these crises created entirely different worlds for people to live in not only in the U.S. but also around the world Because the U.S. is like an elephant amongst mostly mice and ants. If that elephant rolls over in its sleep it affects everyone to a greater or lesser degree worldwide.
Where these changes will lead us no one completely knows. However, for those of us old enough to know what was going on during any or all the changes before, we recognize the feeling of major change on the winds worldwide. Where it all will lead and what it all means historians will have to figure out 5, 10 or 20 or more years from now. However, all of us can feel big changes coming worldwide.