I'm not sure I understand your question, but I'd like to say that all human beings, whether depraved or not, represent a human life. Insofar as possible I believe we should treat all others with as much respect as we can - that doesn't mean we need to like them, but simply respect them as human beings. Any one of us, given different circumstances could end up in a similar situation.
In terms of the American legal system, at least the way it was intended to operate, I believe that all deserve a fair trial regardless of their alleged crime. I like the idea that people are only guilty when proven guilty. It's not a perfect system, but it's the best that I'm aware of on this earth.
Are rapists and child abusers bad people? Yes. According to my belief system, we are all bad people. We just commit different sins, but all is sin in the yes of a Holy God. Vengeance is His, not ours.
According to my belief system, based on the Holy Bible, "As it is written, There is none righteous, no, not one." (Romans 3:10)
We are not equal in this life - that is apparent, but as the Bible says, "That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust." (Matthew 5:45)
"Therefore if thine enemy hunger, feed him; if he thirst, give him drink: for in so doing thou shalt heap coals of fire on his head." (Romans 12:20)
Only God is good. The rest of us are all human.