Is torture to be accepted by the church?
I assume that you are asking whether Christians should accept it when our government tortures people (rather than whether churches should torture people). If so, you can certainly make a case either way.
On the one hand, you can make a case that Jesus would have disapproved of torture. You can take his teaching that says that we should turn the other cheek to those who wish to harm us and argue that it means that torture would be wrong. You can do the same for his statement that the second great commandment is to love your neighbor as yourself.
On the other hand, you can argue that the Christian God is a God of justice as well as of mercy. You can argue that God does not want those who do evil to go unpunished. You can look to instances in the Old Testament where God was willing to interevene violently on behalf of the people of Israel. Such a God, you could argue, would not hestitate to torture those who deserve it when there is a good reason to do so.