In a wide-ranging story at the Washington Post today detailing the reaction of FBI employees to Director James Comey’s firing, Robert Costa, et al. write this:
Many employees said they were furious about the firing, saying the circumstances of his dismissal did more damage to the FBI’s independence than anything Comey did in his three-plus years in the job.
One intelligence official who works on Russian espionage matters said they were more determined than ever to pursue such cases. Another said Comey’s firing and the subsequent comments from the White House are attacks that won’t soon be forgotten. Trump had “essentially declared war on a lot of people at the FBI,” one official said. “I think there will be a concerted effort to respond over time in kind.”
There’s a line from Machiavelli’s The Prince which addresses how one should go about killing an enemy. It is suggested that all heirs also be done away with else they will forever try to avenge the death of the father.
For Machiavelli, this advice was meant literally, but you get the point.