It seems believers are turning more and more away from the notion that God is just. I think it is easier to believe God’s love means He doesn’t want justice for sin. While God has provided a provision for sin when we trust and believe in the saving grace provided by Christ’s sacrifice, God still demands justice which is why Christ had to be crucified for our sins. 2 Thessalonians 1:6 says, God is just: He will pay back trouble to those who trouble you. This also means God protects us. He is able to provide justice on our behalf. There is nothing wrong with asking for justice as long as we remember it is up to God to provide it.