Raise your hand if you are old enough to remember the Vietnam era.

That may sound like a strange question to ask after a weekend of reading the tsunami of online reactions to the decision by Pope Francis to all but crush the 2007 Summorum Pontificum apostolic letter by the now retired Pope Benedict XVI, the document defending the use of the old Latin Mass, now called the Extraordinary Form of the Roman Rite.

Now the fighting — another sign of real divisions between Catholic bishops almost everywhere — will almost certainly be turned up to 11. As Father Raymond J. de Souza of the National Catholic Register put it: “Where there is incense there is fire.”

This brings me back to Vietnam. Here’s the phrase that jumped into my mind, about an hour or two into watching the firestorm on Catholic Twitter: “We had to burn the village in order to save it,” the popular paraphrase of a line in an Associated Press report from that era stating, “It became necessary to destroy the town to save it.”

There appear to be people on both side of the Latin Mass war who are ready to do something like that. Pope Francis has clearly stated that he believes the “ordinary” modern form of the Vatican II Mass cannot live peacefully with rules allowing many Catholics to embrace the faith’s earlier liturgical traditions.

This is an unbelievably complex story and I feel only compassion for the wire-service reporters who had to write short hard-news stories about this action by Pope Francis.

Why? At one point, I started listing some basic facts built into the foundations of this story.

Truth be told, there are:

* Latin Mass activists who reject Vatican II and, from time to time, refer to this pope simply as “Bergoglio,” meaning they still consider him to be Cardinal Jorge Mario Bergoglio of Argentina — not the real pope. They reject Vatican II, period. Pope Benedict XVI has never been in this camp.

* Progressive Catholics whose hatred of the traditional Mass and its proponents is so fierce that they are willing to roll the dice on schism. They believe the “spirit,” not the actual teachings, of Vatican II must be defended at all costs. Some of these liberal Catholics are openly sympathetic to the doctrinal “reforms” sought by German bishops, which could lead to schism in some form.