I've dealt with mean bosses successfully. Of course, I was prepared to be fired before I talked to them. I mostly told them "If you don't like something I did, you tell me straight, and say it respectfully!" It worked.

Note: Don't chew them out in front of everybody else. Talk to them alone, in their office or wherever you can have privacy. Don't call them names. Be polite but let them know you cannot be treated that way. If more than one lawyer is being a jerk, confront each person individually. Look him/her straight in the eye. If that doesn't work for you, or makes things worse, I'd look for another job.