Can't say that lawyers who defend criminals are bad lawyers. Because this is the country's criminal defense system requirements, is the embodiment of criminal law justice. Although the offender has violated the criminal law, but he still has the right to do for his behavior to mitigate, reduce the sentence and other aspects of the defense, these are the need for defense lawyers. Defense lawyers do not mean that they have to make a person who has committed a crime to cunningly argue that he is not guilty, there are many other areas of its business, mainly procedural, but also on the entity.
Let's say the trial of Sadaam, we all know what he has which which charges, ironclad evidence, but without a defense, is not directly sentenced to death. So, his defense lawyers were repeatedly assassinated and the trial could not go ahead.