Massacre of the Latins

Latin residents of Constantinople, meanwhile, in their own ways exacted retribution for the Massacre of the Latins of 1182.

It is probably more proper to point to the "Massacre of the Latins" of 1182 or the "Sack of Constantinople" by the Fourth Crusade in 1204 as more clear separation between the two Churches.

The Crusades, the Massacre of the Latins in 1182, the West's retaliation in the Sacking of Thessalonica in 1185, the capture and sack of Constantinople in 1204, and the imposition of Latin patriarchs made reconciliation more difficult.