Exodus 23:7-8

Keep far away from a false charge or action, and do not condemn to death the innocent or the righteous, for I will not justify and acquit the guilty.  You shall not accept a bribe, for a bribe blinds the clear-sighted and subverts the testimony and the cause of righteous.  

This world doesn’t understand the justice or fairness of God and its commandments.  God is clear in His word that we are to be just and fair to everyone.  However, sin and the flesh will pervert the cause of justice.  Righteousness and sin will never be able to exist together and have the people thrive.