The statement of retired General James Mattis sharply criticizing his former boss is a BFD. General Mattis is a revered figure in military ranks and broadly respected in elite circles and both parties. His voice carries weight beyond Washington too. Much more could be said, but suffice to say that the constellation of people and organizations that will bring down Trump and the Republican Party will be many layered and diverse. Simplistic schemes and pure forms won’t capture its complexity.