Public executions of the convicted murderer would serve as a reminder that crime does not pay. Public executions of criminals seem an efficient way to communicate the message that if you shed innocent blood, you will pay a high price... I agree... on the matter of accountability but also believe such publicity would serve to deter homicide.

Islam is the best guide for everyone's life as well as for a society building and islam say a stable society rely on the system of justice.

Justice is an important teaching in Islam. The Qur'an teaches Muslims to:

Stand out firmly for justice, as witnesses to God, even as against yourselves or your parents, or your kin, and whether it be against rich or poor.Qur'an 4:135

We muslims accept that the death penalty is a punishment established by God in the Qur'an:

Take not life, which God has made sacred, except by way of justice and law. Thus does He command you, so that you may learn wisdom.Qur'an 6:151

This verse teaches that although murder is considered a sin, it is acceptable to use capital punishment when required by law.

Other reasons Muslims may accept the death penalty include:

The Prophet Muhammad sentenced people to death for murder.
Shari'ah law states that the punishment for murder, adultery and denying Islam is the death penalty.