Of course, you are bound to come across the occasional true asshole. These people crop up in all occupations. At that point, you have to resolve to either grin and bear it, fight back, or seek another situation. Don't run and tell your bosses unless the problem is really serious, because they will not appreciate you dumping the problem in their laps. Fighting back rarely pays off.
Assholes are who they are.
Fortunately, encounters with real assholes are infrequent. You'll find this a really broadening experience after your time here at UC-Davis. These people can offer you good advice on your chosen field of endeavor and even a few words of wisdom on how to avoid some common pitfalls. You don't have to blindly follow their advice, but it's a good idea to at least keep it in mind. Okay, I've rambled long enough, although I could go on for another 20 column inches or so.