Prosecutors behaved like junior in this case. Is blood on shoes still sufficient to convict Juan Rivera? The problem here is that prosecutors took an early decision before DNA belonging extraction from blood revealed. Therefore, I agree to prosecutors have to go out of any investigating cases. What happened is damageable.
Several high-profile cases where prosecutors overstepped bounds and manufactured evidence to score a conviction have recently gained notoriety. As a result, innocent people are incarcerated and guilty people are left to commit other crimes. This is not justice for anyone. Prosecutors should certainly be monitored for abuse in order to minimize wrongful convictions and promote identification and incarceration of true criminals.
The performance of prosecutors is based on how many suspects they successfully prosecute. No one analyzes how many people are later found to be innocent. Whether or not someone is perceived as a successful prosecutor who is protecting the public is based solely on conviction numbers. Innocent people wrongfully accused are also members of the public and deserve protection from overzealous prosecutors.
This is why the win at all cost mentality has to stop. People are being framed so someone can win a case. There are so many people in prison because someone wanted another notch on their belt. It's downright evil. This "us versus them" motif is costing people their lives. It's a shame.