What does Acts 3:14 mean?

Peter is explaining to a crowd of Jews on the Temple Mount how they rejected the Messiah that God promised to send the Jews. Here, Peter is talking about how the Sanhedrin, the Jewish ruling council, incited a crowd to force Pilate to crucify Jesus and release a murderer named Barabbas (Matthew 27:15–26). But this verses also describes the history of the Jewish nation.

The most egregious example is the choice of the Israelites to worship Moloch. God promised the Israelites that if they obeyed and worshiped Him, He would make sure their land would remain fertile and their families would have many children (Deuteronomy 28:1–6). Instead, they ignored God and worshiped the Phoenician god Moloch. Part of Moloch's worship was to make large metal statues of the god, either with outstretched arms or a cut-out in the stomach. The statues were placed in a roaring fire, and worshipers put their young children in the arms or the hole. The Israelites who did so certainly denied the Holy and Righteous God in favor of a murderer.

In reality, this is the history of the human race. In the garden of Eden, Adam and Eve chose the sin that causes death over God (Genesis 3:1–7). Peter is condemning Jews for the murder of Jesus because He is a Jew speaking to Jews. The truth is, we are all equally guilty of Jesus' death.