I think that burning books, any of them, is unAmerican. We attack speech we don't like with more speech.
From a completely different angle: attacking Koran (or any other book) is like leftist attacks on guns. You and I know that guns don't kill people; people do. The same is with Koran or Communist Manifesto: neither takes away our freedoms or affects us in any way. What does us damage is people that believe in Koran and/or Communist Manifesto. That is who our enemy is, not things like books or guns.
Today, leftists similar to book-burners of Nazi Germany or Soviet Russia are attacking guns. Tomorrow it will be some other things --- maybe even copies of our Constitution. You and I should take no part of attack on things: not to be in the company of Commies is a sufficient reason. More to the point, focus on things (guns, books) detracts us from focusing on the real enemy (which is why leftists always used that tactic). In addition, when people become used to burning books, it is easy to refocus them on the books they previously loved. (in other words, your favorite books may receive the same treatment some day). That is essentially why bookburning was always considered unAmerican. Apparently, no longer.
‘That is essentially why bookburning was always considered unAmerican.’
Burniong something you own has always been considered un-American? Please cite a source prior to the 20th century.