Ten days after Michael Brown, it was 25-year-old Kajieme Powell. Two months later, it was 18-year-old VonDerrit Myers Jr. All in the St. Louis region. Had it not been for the Ferguson uprising, the deaths of these Black men would have likely gone unnoticed, except for a small, dedicated group of activists who have been tracking police shootings since the 1960s. They’d long been troubled by the local police’s treatment of Black residents and its culture of impunity, the opaque investigations and the often mind-boggling conclusions — such as the finding that the killing of 25-year-old Cary Ball Jr., shot 25 times at close range in 2013, was justified.