They are trained to do anything they are told. Anything.
Remember the Chinese military had no problem mowing down protestors if their bosses give the order.
That said, it is easier and safer to defend yourself from a government in modern society with information and free uncensored communication than with guns.
No, in the United States, the military and all federal employees explicitly swear an oath to the Constitution, and are forbidden from executing illegal orders, regardless of the chain of command.
Yeah, PLA goons in Communist China certainly do things differently.
In the United States, the people are the government. Where are you?
All the members of the NSA swore an oath to the constitution but what they actually followed were the orders of those cutting their paychecks to spy on the American public.
Also note all the leaked footage of our military gleefully mowing down children and keeping score. They are never prosecuted for war crimes either. Just part of the job.
That is how humans work everywhere. The US is not special.
No. But the police and FBI have fighters (I should have used the term agents in my first post, and I am using it to mean anyone exercising force on behalf of the govt).