Yelling at Bureaucrats

The hearing on John Bolton raises the question of whether bureaucrats should be yelled at, or, more precisely, should bosses yell at bureaucrats lower in the hierarchy?

As my mother would say, people should always be nice to other people. However, because I once got in trouble for yelling at a subordinate, I've a little sympathy for Bolton. He's also been criticized for sucking up to the powerful (presumably Cheney, since he was known to disagree with Powell) and bullying the weak. That's more serious, but the thing worrying me the most is whether the powerful saw that he was a sycophant--in other words, if Bolton was poor at toadying then it's okay to give him another job. The horrifying thing about Uriah Heep was that people still trusted him. Otherwise, even terrible human beings can be useful.