CRUCIFIXIONS WERE VERY COMMON IN THE DAYS OF JESUS. When Jesus Was Crucified, His Crucifixion Was Unique For Many Reasons. People do not realize just how unique the crucifixion of Jesus of Nazareth really was.
Many things took place at the crucifixion of Jesus of Nazareth; for this was the plan for the fullness of time to unite all things together through the Son of God. The Apostle Paul refers this event when writing to the Ephesians.
Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places, even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. He destined us in love to be his sons through Jesus Christ, according to the purpose of his will, to the praise of his glorious grace which he freely bestowed on us in the Beloved. In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace which he lavished upon us. For he has made known to us in all wisdom and insight the mystery of his will, according to his purpose which he set forth in Christ as a plan for the fullness of time, to unite all things in him, things in heaven and things on earth. (Ephesians 1:3–10)
Justice is the basis of all liberty. Without justice there are no rights. Justice to provide us all with the right to life and a better hope was executed by the crucifixion of Jesus, the Righteous; wherein we will be able to receive adoption as sons of God ourselves, and the redemption of our bodies. This is so we will be able to enjoy the lives we were destined to have before the violation of righteousness that was wrought by the sinister mind of the one who previously had been given the highest honor bestowed upon a created being.
There has only been one person who has been crucified in the manner that the Jesus of Nazareth's death was executed. All the other religious leaders died, but not like Jesus; who was handed over to another nation to be executed by crucifixion in the place of a murderer at the request of his own people.
There are many different aspects to the death of Jesus. From the fact that this was a prophesied event that was written down 1500 years earlier with many other prophecies being made concerning his death from that time forward, to the events that enabled Jesus to be betrayed and handed over to the Romans by the Sanhedrin for crucifixion between two criminals in place of a convicted murderer as the Passover Lamb slain, during what people say was an eclipse and the end of day. Everything appears that it was staged. Except that the participants were doing everything because they chose to do what they did—not because they were given a script.
Moses was given a plan of what was to happen. This plan is found in the Tabernacle of Moses. Many aspects of Jesus death and resurrection are also found in the statutes that Moses gave to Israel as a nation to keep. More than this, everything in the Old Testament bears witness to Lord Jesus Christ—Jesus said that this was the case, and probably many more times than is recorded during his two year ministry. 
During their exodus from bondage to the Promised Land, much of what happened to the Israelites bears witness to what God requires for salvation of each one of us through faith in Lord Jesus Christ's death and resurrection. To not understand what was fulfilled in the crucifixion and the resurrection of Lord Jesus Christ is to demonstrate not only ignorance but utter spiritual blindness that comes from being conceited enough to think a finite being knows more than the Omniscient Infinite One, within Whom we live and move and have our existence.