If someone is commanded to treat you a certain way, you have a right to know how you should be treated. All unbelievers have a right to know how believers are commanded to treat them.
So who, according to the two largest religions in the world, are the unbelievers?
According to the New Testament everyone who is not a Christian is an unbeliever. And according to the Quran everyone who is not a Muslim is an unbeliever.
Therefore:
Everyone who does not believe that Jesus is the Son of God has a right to read the New Testament and note carefully how Christians are commanded to treat them. All unbelievers have a right to read the Gospels for themselves and see how Jesus treated sinners.
And everyone who does not believe that Muhammad is a prophet has a right to read the Quran and take note of how Muslims are commanded to treat unbelievers. All unbelievers have a right to read the earliest most respected biographies of Muhammad and see for themselves how he treated unbelievers.
And since there has been so much conflict between these two religions, Muslims ought to try and genuinely understand the teaching of Jesus from the Christian sources and Christians ought to try and genuinely understand the teachings of Muhammad from the Islamic sources.
Understanding is the way forward. But understanding does not mean agreement. We don’t have to agree with someone to understand their beliefs and treat them kindly. And we don’t have to pretend their beliefs are better than they are to love them. The following human rights activist is a good example of how we can speak the truth about those who hate us, and love them at the same time. See here.
If Christians and Muslims have nothing to hide, they should welcome such examination of their central figures. Only the wicked pretend they are something they are not.