Burning the Koran?

How does offending the Muslim community by burning the Koran build up the Kingdom of God?  As Americans we may be entitled to our own opinions, but as Christians we do not express them.  It may be our opinion that our neighbor's baby is ugly, but we don't express it. 


Let no unwholesome word proceed from your mouth, but only such a word as is good for edification according to the need of the moment, so that it will give grace to those who hear. Eph. 4:29 (NABS-U)

How does slamming the Muslim community and burning the Koran give grace to those who hear?

Romans 12:17-18 (NASB-U) says, "Never pay back evil for evil to anyone." That includes the Muslim community.  The passage goes on to say, "Respect what is right in the sight of all men. [18] If possible, so far as it depends on you, be at peace with all men."

How does burning the Koran build peace?  I am very confused.  Burning the Koran seems to violate the loving, sacrificial teachings of Jesus Christ on so many different levels.