What do you think motivates lawyers to do pro bono work? Should pro bono work be mandatory for law students and/or lawyers?

I'm at the beginning of training to be a lawyer and I'm really interested in this area of law but have no idea what lawyers who deal with this field are called. Any ideas?

Hi all, I am trying to sue my apartment management company since their employee (my on-site apartment manager) got into my apartment without my permission and stole lots of my personal and financial information and committed lots of fraudulent charges. My question is: How do I find a good lawyer who specializes in this case? I would also like to know how/where I can find lawyers who are willing to take on a case for a portion of the reward rather than an upfront fee. I am living in the bay area, California. Any help/information is greatly appreciated! Thanks.

I know a lot of you make think this is a dumb question but I'm going to ask it anyway. I know lawyers charge a lot for different services but don't they use that money to pay for court costs, paying assistants, filing fees, recording fees, etc...? Do lawyers make money off of small cases or is it the big lawsuits that rack in the dough? Btw, I'm not trying to bash lawyers at all.