Original sentence: The attacks culminated on September 11, 1857, with the mass slaughter of most in the emigrant party by members of the Utah Territorial Militia from the Iron County district, together with some Paiute Native Americans
Edited sentence: The attacks culminated on September 11, 1857, with the mass slaughter of most in the emigrant party by members of the MORMON Utah Territorial Militia from the Iron County district, together with some Paiute Native Americans