ETHIOPIA’S state-appointed human rights commission says security forces killed at least 76 people and wounded nearly 200 during violent unrest in June and July that followed the killing of a popular singer. The commission also detailed brutality by civilians involved in the clashes, saying some attackers beheaded and tortured people after dragging them from their homes and using ethnic slurs. The "widespread and systematic attack" on civilians by attackers constituted crimes against humanity, the commission said. Its report on the violence, some of the worst in Ethiopia since Prime Minister Abiy Ahmed took office in 2018, said a total of…