The simple answer for this world is not law and politics, because it has been proven to fail us. The only answer is Christ Jesus. He is the One interceding for us and we are to live Him out toward the world around us. More laws only creates more law offenders. The only way to overcome the power of law and sin is to have the laws engraved on our hearts (Jeremiah 31:31-34) and to put our trust in Jesus Christ. It is then that we are enabled through the Holy Spirit to live Christ.
The word Christians was actually used as a mockery to lable the idiots trying to be like Jesus and the meaning of this word is little Christs. It caught on because that is what we are actually called to be.
Judaism makes it clear that this world will be saved and allow the Messiah to come when most people on this planet read, study and live the Torah. Torah is the sum total of God’s will and God’s law in Judaism. Torah is the first five books of the Bible also known as the books of Moses and some Rabbi’s also called it the word of God. 1 John 1 explains that Jesus is the word of God whom became flesh and lived among us. So it is the same idea of living the word. We as Christians need to live Jesus, the Word of God.
Living the Word of God is the only way to bring actual change in this world. When everyone, claiming to be Christian, will stop all their nonsense and start living as little Christs this world will not be able to resist the power and change that follows.