A Few Things
DOCUMENT everything. Really. Keep a clear record of incidents that occur, for you and everyone else you observe being bullied. That includes emails, memos, abusive language, jokes at your expense, humiliating comments. GO to Human Resources with your evidence. Be clear and direct in reporting it - do not act the victim. Make it clear that the organization is suffering because of this behavior. If others in the department are experiencing it as well, they may also report this behavior. You may have to report it more than once, I'm sure it depends on how enlightened your HR personnel are in this type of situation. You may be able to transfer out of the department. I would go up the food chain in HR if I got no response at all. Just keep an eye out as to how HR responds - if the rep is chummy with your boss, you want to talk to someone as impartial as possible.