yeah--practise that with Islam and you are dead---
Absolutely!
Turn your other cheek and you have just made it easier for them to carry out verse 47:4 of their Koran...
When you meet the unbelievers in the Jihad strike off their heads [CUT OFF THEIR HEADS] and, when you have laid them low, bind your captives firmly."
"Turn the other cheek"
The NT does not teach the spread of the gospel by means of violence. But I don't think it is wholly passivist (Rom 13:1-7; Acts 25:11). Jesus' teachings were addressed primarily at a personal relationship level. The use of duly authorized police and military in a defensive sense are approved (Luke 3:14).