Complex sentence: Sectarian violence in Pakistan refers to attacks against people and places in Pakistan motivated by antagonism toward their sect, usually a religious group, which in Pakistan may include the Sunni majority, Shia, and the small Ahmadi, Hindu and Christian religious groups.
Split into simpler sentences: Sectarian violence in Pakistan refers to attacks against people and places in Pakistan motivated by antagonism toward the target's sect, usually a religious group. Targets in Pakistan may include the Sunni majority, Shia, and the small Ahmadi, Hindu and Christian religious groups.