Going to sound strange but I think we should be praying for mercy for our enemies...
✝️ Scripture 🕊️
God will win and His might is beyond what we can imagine. Those that are the enemy of God will suffer enormous loss. Pray for God to have mercy on even those that are against Him.
Remember we were all against Him before He came looking for us and found us.
Mercy and Justice can co-exist. Death penalty is a kind of mercy because it forces a sinner to contemplate their eternal destiny. Yes they should face justice, but in mercy we should pray that they repent and ultimately find redemption. Similar to Darth Vader turning from the dark side, or the redemption of St. Paul for killing so many Christians.