I watched the video, and I didn't at all have the same takeaway. Several thoughts:
1. There's nothing wrong about voluntarily defending a guilty man. Every person deserves a trial, and is innocent until proven guilty. It's the foundational tenet of our criminal justice system. Nothing wrong there.
2. The prosecution (or at least the lab) mishandled the evidence, effectively destroying their own case. What would you have the system do? Should we be handing out heavy sentences without evidence now? The integrity of the system is essential to justice, even if that means the guilty sometimes get off. It would be a far greater harm to have more innocent people punished for something they didn't do, which is what would happen if evidence we allowed to be mishandled like this.
3. They plea bargained, so he admitted his guilt despite the fact that they didn't have evidence to stand on to prevent the case from going to a jury trial, where a prosecution who mishandled evidence ran a very real risk of losing the case. Besides, something like 90% of criminal cases end with a plea bargain in the US. I didn't look up the specifics of what he plead guilty to, exactly, but if it were a sexual charge then he would be placed on the sex offenders registry and be subject to continued monitoring by law enforcement, restrictions on where he could work, live, or even walk.
Bottom line, I'm afraid your thread title is a blatantly negative spin on what actually happened. I'm not a huge fan of HRC (nor am I a huge fan of any other politician, tbh), but this is really grasping at straws.