Everything that everyone is afraid of has already happened: The fragility of capitalism which we don't want to admit the loss of the empire of the United States and American exceptionalism. In fact American exceptionalism is that we are exceptionally backward in about fifteen different categories from education to infrastructure.
To all those who have suffered as a consequence of our troubled past I extend my sincere thoughts and deep sympathy. With the benefit of historical hindsight we can all see things which we would wish had been done differently or not at all.