Leave justice and vengeance to God through the legitimately established governments.
"Do not repay anyone evil for evil", Romans 12:17.
"Do not take revenge, my friends, but leave room for God's wrath", Romans 12:19.
God is Just, leave vengeance to Him
'It is written: "It is mine to avenge; I will repay," says the Lord.' Romans 12:19, Deuteronomy 32:35, Hebrews 10:30.
"The Lord is a jealous and avenging God . . . . The Lord is slow to anger and great in power; the Lord will not leave the guilty unpunished" Nahum 1:2-3.
God will judge everyone after their death, ultimate justice will be done. But legitimate Just governments are responsible to be present agents of vengeance, not individual citizens.
Psalm 7:14-16, 140:9, Colossians 3:25 invites us to believe that those who do wrong will reap what they have sown.
Then we must pray that the Holy Spirit will intervene in these people’s lives to bring them to salvation Luke 6:27-28.