Crusaders “sometimes turned their fury against this group” in the Middle East, massacring entire communities.

The group being referred to here are the Muslims. The Crusaders, during the medieval period, embarked on several military campaigns known as the Crusades to regain control of the Holy Land from the Muslims. While their main objective was to capture Jerusalem, the Crusaders often encountered Muslim communities on their way and engaged in acts of violence, including massacres, against them. These acts were fueled by religious zeal and a desire to eliminate the Muslim presence in the region. However, it is important to note that not all Crusaders engaged in such atrocities, and there were instances of cooperation and coexistence between Christians and Muslims during the Crusades as well.