Hello! Thank you for the request.
It is very difficult to deal with a supervisor who has an agenda. They bring their personal issues to work and take them out on those who cannot fight back easily, the workers. This can cause a lot of stress in the work environment and affect everyone. Signs of stress include anxiety, trouble concentrating, worry, trouble with your appetite and/or sleep. It can also affect your work, making you not want to go to work and cause you to withdrawal socially.
Your first reaction is to fight back. That is very normal. No one wants to feel picked on and undermined in their work. But keep in mind, just because you feel these things does not mean you should act on them. The consequences are not worth it. And the chances that any backlash from you will stop your supervisor from being mean to you is nil. It may actually make it worse because now you will be his target.
It is hard but the best way to respond is to not give him the satisfaction of a reaction. The best way to "get back" is to act like your job makes you happy. Smile, greet everyone with kindness and put your nose to the grindstone and work hard. Chances are, your reputation in the company will improve and everyone will see you as an excellent worker. That helps you in the long run because one, the bad supervisor won't be able to speak against you and two, if you ever need to move on you will have great references and won't need this supervisors input.
You may also want to start getting your resume and references together, just in case. It always good to keep your eyes open for a new job. Make contacts, search ads and talk to others about your goals. That way, if things get worse at your job you already are set up to leave as fast as possible.
If things do not improve or get worse, you may want to consider talking to Human Resources, particularly if your supervisor is friends with his boss. You won't get anywhere with him if he is already on your supervisor's side. But Human Resources will need to address any concerns you have. Also, you can contact the EEOC if you ever feel you need to file charges for a violation of your rights. Here is a link:
In the meanwhile, try to keep yourself as calm as possible. You can learn ways to relax at work and at home so you feel more calm and centered. It will also help you think clearer if you are not agitated. Here is a resource to help you learn about stress and how to address it:
I hope this has helped you,