I understand the moral outrage, but remember that our laws guarantee everyone the right to effective legal counsel—even shitty, guilty people. For this reason, I think one has to give some pause before judging lawyers who defend obviously shitty/guilty clients. I saw an expose once on a hated defense lawyer who almost always took cases wherein the defendant was obviously guilty and had virtually no shot at trial due to overwhelming evidence. He maintained he took the clients in question specifically because he felt everyone deserved the right to a decent lawyer and this class of people are often shunned by attorneys who prioritize their win/lose ratio.