Lawyer's Ethics (video)
I've uploaded another video. This one is about ethics for lawyers (including prosecutors): https://youtu.be/gCBFeAoG9OA
TL;DW: It is unethical for a lawyer to knowingly attempt to bring about unjust legal outcomes. This applies to defense lawyers trying to get heinous criminals acquitted, prosecutors seeking draconian punishments, etc. This is for the same reason that it is morally wrong, e.g., to try to help a friend get away with murder, and the same reason that it is wrong for a lawyer to knowingly introduce falsified evidence, suborn perjury, etc.