There is always a small number of people who try to seize government’s power, secretly and behind closed doors. They don’t care about the public, only their own quest for power. This is why all police in America legally swear to obey a Constitution above any “fuhrer”, supervisor, lieutenant, general, or president.
Having seen this great need first hand, George Washington said, “A free people ought not only be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.”