This article aims to study how social practice can affect the “memory” with a focus on the 300-year-old mosque, at the Saikhao community in Pattani’s Khok Pho district, as the site of memory and the authorities’ construction of the “Santisuk” collective memory amid the ongoing violence. The study finds that The state has played a role as the constructor of the SaiKhao community’s collective memory. The related use of social practice was studied. The state efforts covered material, symbolic and functional elements that targeted people not just in the three southernmost provinces but also beyond. Because it symbolizes the peaceful co-existence of Buddhists and Muslims, the 300-year-old mosque has been used by the state as a tool amid the ongoing violence in the southernmost Thailand.