I once worked for a prestigious human rights organisation, which seemed to believe in human rights for everyone except their junior staff, who were regularly to be found in floods of tears.
I was hired because I already had experience of responsibility and working autonomously in my role (was told this at the interview) yet my boss insisted on micromanaging everything I did.
She took a real dislike to me and was thoroughly unpleasant- including blanking me completely when I said good morning to her. Some of her best tricks:
Having a go at me for not using a complicated piece of software in my first week even though she knew I was not going to be trained to use it until the following week (although I got my revenge just as I left when I discovered that she did not know how to use it so all the amendments she had made to my work did not make it to the final draft!)
Several times 'retraining' me to work in a different way to how I had been used to, and then when I followed her instructions to the letter ridiculing me for working in such a stupid way.
Shouting at me in front of the office for missing a deadline I had been given, and when I calmly gave her the memo she had written saying that the deadline was not for a week hence completely ignoring it and not apologising.
Not checking her emails for two days, then opening a document I had sent her in the wrong format and corrupting it. Having a go at me for not chasing her for a response to the document on day 1. Refusing to let me attend a scheduled meeting with a colleague and making me sit at my desk twiddling my thumbs whilst tech sorted out the corrupted file. Then having a go at me for rushing through the rest of my days work and being late leaving for a meeting in the afternoon.
Having a go at me for Interrupting her to check urgent work.
Insisting that I sit at her desk or her colleagues desk in a different part of the office, and different floor to where my desk was. For no discernible reason. And literally shouting at me for taking too long to sort out a trolley to move all the files I would need to work on that day.
None of these incidents are by themselves as serious as some of the things people have posted, but the whole of the atmosphere in that office (did I say it is a prestigious human rights organisation?) was awful. I remember the first office team meeting when I made a suggestion (something simple about printers) and literally received open-mouth stares of surprise- junior staff apparently were expected to attend but not participate. The company had such a big problem with employee stress that they arranged free massages every fortnight.
My particular boss was so awful that she had been made to go on an anger management course and because she had taken no holiday for so long was made to work a 4 day week, on the threat of disciplinary procedures.
Sorry for the rant- needed to unload that. I lasted 4 months in the job.