James Mattis denounces President Trump, describes him as a threat to the Constitution

Reporting cited here

1. documented

   After federal officers cleared Lafayette Square and Trump threatened to deploy active-duty troops, Mattis wrote that militarizing the response created a false conflict between the military and civilian society and that officials must reject actions that violate the Constitution. He called Trump the first president in his lifetime not even pretending to unite Americans. Trump answered with personal attacks on Mattis.

   Mattis's complete statement and editorial context on Lafayette Square and military deployment

   Mattis breaks his silence and accuses Trump of abusing military power against Americans · Publicly estranged from Trump