Original sentence: 1871     Camp Grant Massacre  Led by ex-Tucson mayor, William Oury, a vigilante band from Tucson slaughtered Apache women and children while the men were doing their spring planting
Edited sentence: 1871  April 30th   Camp Grant Massacre  Led by ex-Tucson mayor, William Oury, a vigilante band from Tucson slaughtered Apache women and children while the men were doing their spring planting.1871November 5 Wickenburg massacre Arizona Stage coach attacked-driver and five passengers killed.Wikipetia article