I follow your deductions, but get stuck in the rough-edge categories you set as opposites:  The US vs. Islam, fundamentalists vs. founding documents, etc.  If I thought "humanism" wasn´t going to win, I´d give up.  

The obvious part is that economic-and-political power-mongers have played the religious extremists against the middle and let them step over the boundaries of the economic and political, as if they were interchangeable.  Blending religion with econ-politics is the explosive that has destroyed any balance.

The power of change is in people´s hands, but I´m afraid the apathy of those "consumer addled minds" will take time to reactivate the majority needed.  Given time to elect better leaders, fundamentalists will be set back to their limited fringes.  


Our knowledge has surpassed our wisdom. -Charu Saxena.