The Bible says....

Matthew 6:14-15
For if you forgive men when they sin against you, your heavenly Father will also forgive you. But if you do not forgive men their sins, your Father will not forgive your sins.

2 Corinthians 2:5-7
If anyone has caused grief, he has not so much grieved me as he has grieved all of you, to some extent—not to put it too severely. The punishment inflicted on him by the majority is sufficient for him. Now instead, you ought to forgive and comfort him, so that he will not be overwhelmed by excessive sorrow.

Romans 13:1-3
Everyone must submit himself to the governing authorities, for there is no authority except that which God has established. The authorities that exist have been established by God. Consequently, he who rebels against the authority is rebelling against what God has instituted, and those who do so will bring judgment on themselves. For rulers hold no terror for those who do right, but for those who do wrong. Do you want to be free from fear of the one in authority? Then do what is right and he will commend you.

Hebrews 13:17
Obey your leaders and submit to their authority. They keep watch over you as men who must give an account. Obey them so that their work will be a joy, not a burden, for that would be of no advantage to you.

1 Peter 2:13-14, 18-20
Submit yourselves for the Lord's sake to every authority instituted among men: whether to the king, as the supreme authority, or to governors, who are sent by him to punish those who do wrong and to commend those who do right.
Slaves, submit yourselves to your masters with all respect, not only to those who are good and considerate, but also to those who are harsh. For it is commendable if a man bears up under the pain of unjust suffering because he is conscious of God. But how is it to your credit if you receive a beating for doing wrong and endure it? But if you suffer for doing good and you endure it, this is commendable before God.

[New International Version; emphases mine]

The Bible clearly says we must forgive others, even if they do terrible wrongs against you. Even if we have every right to cut their heads off, we still have to forgive them, because... because we have been so graciously forgiven even as sinners!! And we must obey authority, even is they are mean, harsh, unjust - God sees, God knows - that's all that matters. Things may seem unfair but God is pure justice, and He knows best!!

Thanks Ryner Lai