Which, I believe, is the defence attourney's job. To give his client the best defense that can be mustered and let the courts decide if he is guilty or innocent. If an attourney is foudn to have done less he has violated the law and can lose his license and be imprisoned himself. If the lawyer wasn't hired, and was appointed by the courts, they have my sympathies on having to try such a case.
So of course they are going to try to confuse or cloud the issue. Were the case against the defendant weak and shakey the prosecution would do the same thing.
Whether his attourney condones his client's actions or not he is bound by law to defend him. Hate the perpetrator of the crime, don't hate his lawyer for doing his job.